science please help me with this

Science Please Help Me With This

Answers

Answer 1

Answer:

a lack of genetic variety

first one is the correct one

Answer 2
A lack of genetic variety


The first one

Related Questions

hello! please answer this question, i need help with it, and, i need a factual answer provided with evidence, thank you: why don't all clouds produce rain?

Answers

When a cloud is created by water vapor in the air, there are dozens of water droplets in the cloud. They fall downward due to gravity, but sometimes do not make it to the surface as rain. This is because the air gets warmer the closer you are to ground level. So as the droplets fall, they evaporate causing the cloud to not produce rain.
This question has a simple yet complicated answer but to answer your question all clouds don't produce rain because when water evaporates from Earth they store up into a cloud and the more the cloud gets the more it cannot hold its like when you hold something and the more you hold it getting heavier and heavier intill it all falls down and rains down to the floor I hope this was helpful!

Identify each wave interaction based on how it changes direction.
The wave changes direction as it bends and scatters.



The wave changes direction as it changes its speed.



The wave changes direction at an angle equal to the angle of incidence.

Answers

took a screenshot for you since the guy above is a degen

In your own words, what was the purpose of this lab?


Hypothesis:
In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.

Test One: If I breed a short fur, FF female with a short fur, Ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.

Test Two: If I breed a short fur, Ff female with a short fur, Ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.

Test Three: If I breed a long fur, ff female with a long fur, ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.


Procedure:
The procedures are listed in your virtual lab. You do not need to repeat them here. Please be sure to identify the test variable (independent variable) and the outcome variable (dependent variable) for this investigation.

Remember, the test variable is what is changing in this investigation. The outcome variable is what you are measuring in this investigation.

Test variable (independent variable):
Outcome variable (dependent variable):


Data:
Record the data from each trial in the data chart below. Be sure to fill in the chart completely.

Test One

Parent 1: FF

Parent 2: Ff


Phenotype ratio:
________ :

________
short fur :

long fur

Test Two

Parent 1: Ff

Parent 2: Ff


Phenotype ratio:
________ :

________
short fur :

long fur

Test Three

Parent 1: ff

Parent 2: ff


Phenotype ratio:
________ :

________
short fur :

long fur

Conclusion:
Your conclusion will include a summary of the lab results and an interpretation of the results. Please write in complete sentences.

Which genotype(s) and phenotype for fur length are dominant?
Which genotype(s) and phenotype for fur length are recessive?
If you have a hamster with short fur, what possible genotypes could the hamster have?
If you have a hamster with long fur, what possible genotypes could the hamster have?
Did your data support your hypotheses? Use evidence to support your answer for each test.
Test One:
Test Two:
Test Three:
Which hamsters are the parents of the mystery hamster? Include evidence to prove that they are the correct parents.
In this lab, you will investigate how organisms inherit traits.

Objectives:

explain that every organism requires a set of instructions that specifies its traits
explain the difference between dominant and recessive traits or alleles
recognize phenotype as the physical expression of the genotype
recognize genotype as the collective sum of all alleles and their specifying traits
analyze animals to demonstrate evidence of the hereditary information that is passed from one generation to another. Welcome to Hamster Haven!

We are the world's largest pet store and research facility dedicated to studying hamster heredity.

Inside we have a team of geneticists who oversee the breeding and offspring of the hamsters to ensure that we have many varieties for our customers to choose from.

Recently, our team of geneticists has been studying how hamsters inherit fur length.

You are invited to join our team to assist in the process.

Let's take a look at our geneticist notebook to learn more about how traits are inherited.Let's take a closer look at cells. Inside of each cell is a nucleus. The nucleus is like the command center for the cell and houses all of the cell's genetic material, called chromosomes. Tightly wrapped in the chromosomes are individual proteins, called genes, on strands of DNA.raits are determined by the genes the hamsters inherit.

Each hamster can inherit the trait for long fur or the trait for short fur.Let's examine the hamsters that you will be investigating today.

Select each hamster to learn more about its dominant and recessive traits.

Dominant Trait

Recessive Trait

Answers

Answer:

Objective(s):

In your own words, what was the purpose of this lab?

In this lab report, the purpose is that hamsters carry traits fro parents.

Hypothesis:

In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.

Test One: If I breed a short fur, FF female with a short fur, Ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.

All short fur

Test Two: If I breed a short fur, Ff female with a short fur, Ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.

Some short and some long

Test Three: If I breed a long fur, ff female with a long fur, ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.

All long fur

Procedure:

The procedures are listed in your virtual lab. You do not need to repeat them here. Please be sure to identify the test variable (independent variable) and the outcome variable (dependent variable) for this investigation.

Remember, the test variable is what is changing in this investigation. The outcome variable is what you are measuring in this investigation.

Test variable (independent variable):
Outcome variable (dependent variable):

Data:

Record the data from each trial in the data chart below. Be sure to fill in the chart completely.

Test One

Parent 1: FF

Parent 2: Ff

FF

FF

Ff

Ff

Phenotype ratio:

____0____ :

___4_____

short fur :

long fur

Test Two

Parent 1: Ff

Parent 2: Ff

FF

Ff

Ff

ff

Phenotype ratio:

1 :

____3____

short fur :

long fur

Test Three

Parent 1: ff

Parent 2: ff

ff

ff

ff

ff

Phenotype ratio:

4 :

___0_____

short fur :

long fur

Conclusion:

Your conclusion will include a summary of the lab results and an interpretation of the results. Please write in complete sentences.

1. Which genotype(s) and phenotype for fur length are dominant? FF

2. Which genotype(s) and phenotype for fur length are recessive? ff

3. If you have a hamster with short fur, what possible genotypes could the hamster have? It would probably be Ff or a ff

4. If you have a hamster with long fur, what possible genotypes could the hamster have? It would be Ff or an FF

5. Did your data support your hypotheses? Use evidence to support your answer for each test.

◦ Test One:? ◦ Test Two:?

◦ Test Three:?

6. Which hamsters are the parents of the mystery hamster? Include evidence to prove that they are the correct parents.?

Explanation:

Here you go!

The purpose of this lab is to learn to breed different types of hamsters for giving a variety to the customers.

Why a hamster is being Genetically modified ?

So as to produce hamsters which have different looks that attract customers.

In this lab you are studying about how a hamster inherit traits from their parents when you breed short fur and long fur female and male in various orders.

After completion of this experiment in the lab you will have the idea of how every organism requires a set of instructions that decides its traits.You will be able to identify the dominant and recessive traits of a hamster when different fur female and male are made to breed , and how the heredity is passed from one generation to another .

Hence by getting the idea of all these things you will be able to breed different type of hamster , and that has helped the pet store to make different offspring with different characteristics for customers with different requirements.

To know more about Genetically modified organisms : https://brainly.com/question/21411587

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How does carbon move around on Earth?

Answers

Answer:

Carbon moves from plants and animals to soils. When plants and animals die, their bodies, wood and leaves decays bringing the carbon into the ground. Some is buried and will become fossil fuels in millions and millions of years. Carbon moves from living things to the atmosphere.

Answer:

Explanation:

How does carbon move between the 4 spheres on earth?

CARBON ENTERS THE ATMOSPHERE THROUGH DEATH/DECAY OF PLANTS & ANIMALS, FOREST FIRES, RESPIRATION, BURNING FOSSIL FUELS AND VOLCANIC ERUPTIONS. CARBON ENTERS THE HYDROSPHERE BY DISSOLVING INTO OCEAN WATER. CARBON ENTERS THE GEOSPHERE THROUGH DEATH/DECAY OF PLANTS & ANIMALS.

Which of the following is the term for the heaviness on something's surface that exerts a force over an area
pressure

sediment

deposition

eruption

Answers

Answer:

A

Explanation:

I think it's pressure. Using the process of elimination,  sediment is the matter that's on the bottom of a liquid or solution, deposition is the process of deposing, eruption is the process of erupting, and pressure's formula is force/area, so pressure is the answer.

pressure since it’s meaning is the weight and force being applied onto something.

Select all that apply.

Which of the following equilibria will shift to the left when the temperature is increased? [ΔH (kJ/mol) values are given in parentheses.]

(a) S + H2 ⇌ H2S ΔH (−20)


(b) C + H2O ⇌ CO + H2 ΔH (131)


(c) H2 + CO2 ⇌ H2O + CO ΔH (41)


(d) MgO + CO2 ⇌ MgCO3 ΔH (−117)


(e) 2CO + O2 ⇌ 2CO2 ΔH (−566)

Answers

I think it is A and C!

The equilibrium of the reaction (a), (d), and (e) will shift to the left side when the temperature is increased.

What is equilibrium law?      

Equilibrium law states that if the dynamic equilibrium gets disturbed by changing the conditions such as temperature, pressure, etc., then to reestablish equilibrium, the position of equilibrium will shift to counteract the change.

As we know that if the change of enthalpy (ΔH) is negative then the reaction is exothermic in nature and if the change in the enthalpy is positive the reaction is endothermic in nature.

Therefore, the reaction (a), (d), and (e) are exothermic reactions, and the reaction (b) and (c) are endothermic reactions.

On increasing the temperature, if the forward reaction is exothermic. Then the equilibrium will shift to the reactant side or left so that excess heat will be absorbed in the backward reaction.

Therefore,  when the temperature is increased, the reaction (a), (d), and (e) will shift the equilibria to the left side.

Learn more about equilibrium law, here:

https://brainly.com/question/10567558

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Draw the three-carbon hydrocarbons propane, propene, and propyne. Classify each molecule, and explain the differences between them. Answer:

Answers

The term hydrocarbon refers to a compound that is composed of only hydrogen and carbon.

What is a hydrocarbon?

The term hydrocarbon refers to a compound that is composed of only hydrogen and carbon. The compounds propane, propene and propyne are alkane, alkene and alkyne respectively.

The structure of  each of the molecules are shown in the image attached to this answer. The compounds contain single, double and triple bonds respectively.

Learn more about hydrocarbons: https://brainly.com/question/17578846

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whats the answers 1-10 on brainpop nervous system i need help

Answers

Answer: 1.What is the best synonym for the word intricate? Complex. 2.What might happen if your body lacked neurotransmitters? Your nerve cells could not communicate with one another. 3.How are neurotransmitters different from the impulses that travel along the bodies of nerve cells? The impulses are electrical; neurotransmitters are chemical.4.What process is governed by the autonomic nervous system? Digesting Food  5.What is an example of a reflex? Blinking.

Explanation:

Help this is science class and it’s not necessary my best class and I’m kinda slow at learning

Answers

Answer:

d

Explanation:

you can elimate a as your body has a fever to fight the infection and antibiotics are just there  to assist.   b is elimanated as slowing the life cycle would be modifying the germs genetic's which is not how antibiotcs work they just your bodys imune system.  c is elminated as stated in the question  the virus came back which not be possible if the bacteria stoped reproducing.   that leaves d which means that yould likley be perscribed a diffrent anti biotic

I think the answer is d

The diagram shows a plant cell.
Which structure controls every activity of the cell?

A. structure 1
B. structure 2
C. structure 3
D. structure 4

Answers

Answer:

B. structure 2

Explanation:

It represents nucleus which is the brain of the cell

B. structure 2
Explanation: the nucleus is like the head of the cell so it controls everything that goes on in there

Which part is pointing to the gel-like liquid that holds the organelles, and which is the site of much of the cell's metabolism?
Select one:

4


2


1


6


8

Answers

Answer: hope this helps ♡

2 and 3

Explanation:

The gel-like liquid that holds the organelles is called the cytoplasm. (2)

The site of much of the cell's metabolism is called the mitochondria. (3)

A student places six plants of equal sizes into six different, equal-sized pots containing the same amounts of potting soil and labels the pots U, V, W, X, Y, and Z. Using two pots in each of the three experiments, the student varies the amounts of sunlight, water, or air one plant receives but leaves the other pot unchanged. The tables show the factor varied in each pot and the observations made by the student after one week.


Which conclusion best explains the connection among all three experiments?


A. All plants grown in pots require the same amounts of the abiotic factors for their growth and survival.

B. All plants of the same size require the same amounts of the abiotic factors for their growth and survival.

C. The plants require a balance of all abiotic factors for their growth and survival.

D. The plants depend very little on abiotic factors for their growth and survival.

Answers

Answer:  I would go with D.

Explanation: Sorry if it is incorrect

What are two minerals that could not be identified by using just one property?

Answers

Color that’s the answer
Color. One of the most obvious properties of a mineral is color. Color should be considered when identifying a mineral, but should never be used as the major identifying characteristic.

other that uses probing are

Answers

Answer:

Clarification. A clarification question requires a simple fact-based response. ...

Recommendation. A recommendation probing question involves a certain degree or persuasion. ...

Example. An example question is ideally suited for responses that may be vague or confusing. ...

Extension.

Explanation:

As ocean water salt concentration increases, the _____.

Question 1 options:

water density increases and rises to the top of the sea.


water density decreases and rises to the top of the sea.


water density decreases and sinks to the bottom of the sea.


water density increases and sinks to the bottom of the sea.

Answers

Answer:

The answer is D. water density increases and sinks to the bottom of the sea.

Explanation:

As water concentration increases, the density does as well, I believe it would sink to the bottom of the sea.

Which activity requires people to use fossil-fuel resources?
O A. Buming wood in a campfire
O B. Turning a turbine on a wind farm
O C. Eating fruit, vegetables, and chicken
OD. Powering a furnace with natural gas

Answers

Answer:

b and d

Explanation:

B turning a turbine on a wind farm ! :)

PLEASE HELP! ill give brainliest if it ACTUALLY helps-

which is a physical change?
a.) rusting iron
b.) burning paper
c.) cracking egg shell
d.) reacting baking soda and vinegar

Answers

Answer:

C) cracking an egg shell

Explanation:

because it is ireverable

YW have a good day :)

Answer: C.

Explanation:

because you are simply breaking it you are not making a chemical reaction.

The structure that the arrow is pointing to holds water for this plant cell. This structure is a - ?
Select one:

ribosome

cell wall

vacuole

mitochondria

Answers

Answer:

that is a vacuole.

Explanation:

the vacuole!

a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.

Waste to be evaluated currently goes to a large trash container outside.

How can we monitor our waste managment in the enviorment?

Answers

Answer:

Reduce our waste, and find ways to recycle anything that has to be disposed in mass quantity.

Explanation:

Place the following types of electromagnetic radiation in order from LOWEST energy to HIGHEST energy? (A) visible light (B) gamma rays (C) radio waves Question 9 options: A, C, B C, A, B B, C, A C, B, A

Answers

Answer:

C, A, B

Explanation:

hope this helps!

Explain how the process of weathering changes rock to eventually, over a long time, to become soil.

Answers

Answer:

Rocks turn into the soil through the process of weathering. Weathering is when rocks are broken down into smaller pieces. Over time a large rock is broken into smaller and smaller pieces, eventually turning into soil. Chemical weathering occurs when water gets inside of a rock and reacts with some of the mineral components of the rock, chemically changing them and weakening the rock's structure. This causes the rock as a whole to break down, and over time chemical weathering can break a rock into small enough pieces to become soil. Once the rock is in very tiny pieces, it mixes together with organic and other inorganic elements to form the soil we are familiar with.

Explanation:

Which statement below gives an example of thermal expansion?

A. drops of water form on the outside of a glass of water
B. a puddle of water disappears in the sunshine
C. frost forms on a window
D. the volume of a liquid in a container increases with temperature

Answers

Answer:

i think its D.

Explanation:

i’m pretty sure it’s d

how do i stop chewing my nails?

Answers

Answer:

keep your nails short

Explanation:

it will help you not to bite it

Answer:

1. Keep your nails trimmed short. Having less nail provides less to bite and is less tempting.

2. Apply bitter-tasting nail polish to your nails. Available over-the-counter, this safe, but awful-tasting formula discourages many people from biting their nails.

3. Get regular manicures. Spending money to keep your nails looking attractive may make you less likely to bite them. Alternatively, you can also cover your nails with tape or stickers or wear gloves to prevent biting.

4. Replace the nail-biting habit with a good habit. When you feel like biting your nails, try playing with a stress ball or silly putty instead. This will help keep your hands busy and away from your mouth.

5. Identify your triggers. These could be physical triggers, such as the presence of hangnails, or other triggers, such as boredom, stress, or anxiety. By figuring out what causes you to bite your nails, you can figure out how to avoid these situations and develop a plan to stop. Just knowing when you’re inclined to bite may help solve the problem.

6. Try to gradually stop biting your nails. Some doctors recommend taking a gradual approach to break the habit. Try to stop biting one set of nails, such as your thumb nails, first. When that’s successful, eliminate your pinky nails, pointer nails, or even an entire hand. The goal is to get to the point where you no longer bite any of your nails.

How was Earth’s atmosphere changed during the Great Oxygenation Event?

Answers

Consequences of oxygenation. Eventually, oxygen started to accumulate in the atmosphere, with two major consequences. Oxygen likely oxidized atmospheric methane (a strong greenhouse gas) to carbon dioxide (a weaker one) and water.

Answer: .Early organisms created oxygen from other gases in the atmosphere

Explanation:

It is believed that the atmosphere emerged about 4,500 million years ago, by a process that can be explained in five stages.

In the first stage, the atmosphere was shaped by volcanic emanations, such as water vapor, carbon and sulfur dioxide, and nitrogen. At this point, oxygen was barely present.

In the second stage, as the Earth cooled, the water vapor condensed and formed the oceans. Carbon dioxide reacted with the rocks of the earth's crust to create carbonates - (CO32-); a portion of them, when dissolved in the seas, generated salt water.

In the third stage, approximately 3.500 million years ago, bacteria appear, capable of carrying out photosynthesis, that is, of producing oxygen. This facilitated the development of marine life.

Once the atmosphere obtained sufficient oxygen, the fourth stage appeared, the evolution of large organisms as animals capable of breathing air.

This is how the current atmosphere containing the gases created in each of the previous phases was reached. These are kept in motion by winds and rains, allowing humans, and other living organisms, to breathe. For this reason, without them there would be no life on the planet.

Which statement best describes the Sun-Earth-Moon system during a spring
A. The Moon's orbit is perpendicular to Earth's orbit.
B. The Sun, Earth, and the Moon are arranged in a straight line.
O C. The Sun, Earth, and the Moon form a night angle.
D. The Moon's orbit brings it closer to Earth.
(extra points for who ever answers first and the right answer please)

Answers

Answer:

That answer is B

Explanation:

The sun's gravity pulls on earth's water while the moon gravity pulls on water in the same places

It is B ….. the sun earth and the moon are arranged in a straight line

What is the shape of planetary orbits?

Question 1 options:

circular
square
rectangular
elliptical

Answers

i believe its elliptical
elliptical should be the answer! Hope this helped

The amount of coal burned to produce electricity by a typical coal plant in the United States during a three year period has increased by 30%.

What immediate impact will this increase in the consumption of coal have on the environment?

A. a decrease in freshwater resources

B. an increase in non-biodegradable wastes

C. an increase in greenhouse gas emissions

D. a decrease in atmospheric O2

Answers

The correct answer is C.

I would appreciate it if you would mark my answer as brainliest.

To be honest I really just need help on figuring this out

Answers

Answer:

d

Explanation:

a change in colour over several generations would happen as a result of a preadeator atacking that specfic colour and the darker colour not being known by the preadotor/ less easily spoted by the preadator and allowing them to survive better

Answer:

the light coloured butterfly undergo gene mutation to develop a darker colour

Explanation:

As the time passed,the trunk of the tree due to air pollution and other factors turned dark so the light coloured butterflies were easy visible to predators.they underwent gene mutation and changed their colour so they can survive.

This is a picture of a plant cell.
Select all organelles listed here that you would also find in an animal cell.
Choose all that apply:

12


8


4


1


2

Answers

Answer:

3 4 8

Explanation:

2,3,5,8 and 11 i say this because Animal cells have a cell membrane and they also have cytoplasm a nucleus mitochondria and a vacuole

The diagram shows molecules entering and leaving a cell over a period of time. What controls this process?
Select one:

the ribosomes

the vacuoles

the cell wall

the cell membrane

Answers

Answer:

I believe it is The Cell Wall or The Cell Membrane

It is the cell membrane the cell wall does not let anything in
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Which of the following hints was most helpful in deciding the method of characterization used? A. how the person looksB. what others say about the personC. what the person saysD. what the person does Many of Ginas friends either smoke cigarettes or vape. Gina is on the track team and trying to get a scholarship to college, so she definitely does not want to participate in these behaviors. Her friends know she is an athlete and values health. How will this shape her ability to resist peer pressure? please help fast ...... Write a word problem that must be solved with division and includes 2/7 as the dividend and 4 as the divisor. What do you think the last two lines of the poem mean About 70 percent of individuals with Down syndrome who live past age 40 show symptoms of ________ disease. Two siblings are born to the same parents. One sibling has brown hair, and the other sibling has blonde hair.Which statement about the siblings' genetic information is true? Their genes for hair color have been moved to different chromosomes. They have different alleles for hair color. They both carry mutations in their genes. Their genes are identical. Which statement best describes how Andy has been affected by the conflict?Andy has lost his faith in the system after talking to the principal and he has decided to act on his own.Andy has become very angry about the racist fans and he will put an end to their comments no matter what.Andy is intent on making a change for the better and putting an end to the racist comments coming from the racist fans.Andy feels bad for the protesting players, but he does not want to get too involved in other peoples problems. ten less than 40% of a number is -4 The Articles of Confederation, provided for aA. Chief Executive.B. law-making bodyC. national monetary systemD. court system. A lender estimates the closing costs on a home loan of $90,000 as listed below. closing cost charge loan origination $180 title insurance $365 attorneys fees $795 inspection $300 recording fees $120 escrow $980 the actual closing costs were: closing cost charge loan origination $180 title insurance $340 attorneys fees $830 inspection $375 recording fees $150 escrow $1,000 evaluate the lender's good faith estimate as a percentage of the loan amount. a. the lender made a very good estimate; it was within 0.25% of the actual closing costs. b. the lender made a fairly good estimate; it was between 0.25% and 0.5% from the actual closing costs. c. the lender made a somewhat poor estimate; it was between 0.25% and 0.5% from the actual closing costs. d. the lender made a very poor estimate; it was between 0.5% and 0.75% from the actual closing costs. What are the connotative meanings of sighing, as used in the poem? Choose two answers Which of the following does NOT contribute to setting the tone of a news story?A. setting and clothingB. languageC. musicD. the 5 Ws + 1 H What is the median of set A Barriers to trade reduce the amount of output that can be supplied by foreign companies and, as a result, cause prices in the market to be ______ than they would otherwise be. This results in consumers buying ______ output if a thing is not a flower, then it is not a plant.shorthand 100 points! Please hurry! Are chickens or crocodiles close to dinosaurs? List 3 reasons whyWhat are similarities of chickens and crocodiles? Please I need help and I'm struggling on this question In 1819, the u. S. Took control of florida from which country?. Let Tn, be the number of dots in figure.How many dots are there in figure 30?Look at the picture (don't mind of the highlighted ones).