Answer:
Are age-structure diagrams useful in predicting future population trends? How? Yes, age-structure diagrams allow scientists to determine if the number of individuals likely to have children will increase or decrease in the future.
Which scenario best describes how climate trends might affect animal migration?
Animals found in the Arctic may move south.
Animals found at the equator may move north.
Animals found in higher elevations will move to lower elevations.
Animals found in lower elevations will stay in the same location.
Answer:
Answer is B
Explanation:
Animals either migrate northward or to higher elevations during rising temperatures as stated in the lesson
Which parts of the water cycle require the water molecules to give away heat energy (cool
down)?
The part of the water cycle that require the water molecules to give away heat energy is : Condensation
Meaning of water cycle and condensation
A water cycle can be defined as the cycle that entails the continuous and consistent movement of on the the earth surface, which is above the earth surface and below the earth surface.
Condensation is a process where gasses changes to liquid. it is the cooling down of water molecules that are in form of vapor and converting to water in its liquid form.
In conclusion, The part of the water cycle that require the water molecules to give away heat energy is Condensation
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What is the process that leaves sediment in a new area called
Answer:
Deposition
Explanation:
Answer:
B
Explanation:
The answer is deposition
The diagram shows two cells. Identify structures C, D, and E and explain how they work together to perform a specific process within the cell. Enter your answer in the space provided.
Answer:
C is the ribosome, D is the rough ER, E is the Golgi body. Ribosomes help make proteins, the rough ER makes proteins, and the Golgi body processes and delivers proteins.
Explanation:
Rough endoplasmic reticulum, or rough ER, is the term for the regions formed when these membrane-bound ribosomes coat the surface of the ER.
What is the role of endoplasmic reticulum?In both prokaryotes and eukaryotes, the translation of proteins is the main job of the ribosomes.
The big ribosomal subunit of the ribosome binds to the ER membrane and subsequently carries out protein translation there.
The Golgi complex before being delivered to their final locations, the endomembrane system is first introduced into the ER.
Different domains that are made up of sheets, tubules, and the nuclear envelope carry out the diverse ER tasks.
Therefore, C is the ribosome, D is the rough ER, E is the Golgi body.
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The body system is responsible for creating new life.
Answer: yes, you are correct, but sometimes it is unable to create lives....then there is the option, of adoption.
Explanation: Men may not make enough sperm, or that sperm many not be strong ... can just happen (the same as some people might develop conditions ... to allow families who can't easily have babies to get pregnant and have families of their own. Most cases of female infertility are caused by problems with ovulation. Without ovulation, there are no eggs to be fertilized. Some signs that a woman is not ovulating normally include irregular or absent menstrual periods. Ovulation problems are often caused by polycystic ovarian syndrome (PCOS). another case is the body is just too old, and is shutting down. adoption is sometimes expensive, and has a lot of paperwork, but giving a child a family; is the best gift of all. some parents just aren't fit to take care of their child(children), so they go into foster care, and have the choice of either living on their own; or being adopted.....but in some cases, they don't have the choice, because they are too young to decide that.
A body system is a collection of parts able to work together to serve a common purpose growth, reproduction and survival.
The correct question is "The body system is responsible for creating new life" is called the reproductive system.The various part of a system depends on the other parts to perform the tasks. The various individual system works in lins with other systems to improve our chances of survival by maintaining a stable internal body environment.
Conclusively, the reproductive system is responsible for creating life. The the male and the female reproductive system differs.
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An element with 13 protons has an atomic mass of 27. Its number of neutrons is
Please help!!!
If oxygen atoms are in low concentration outside of a cell, but the cell requires more oxygen, how will the cell move the oxygen inside the membrane?
Answer:
Simple Diffusion across the Cell (Plasma) Membrane. The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.
Explanation:
9. If Seneca decides to walk across town to a store that is .95 kilometers away and
she has only 25 minutes to get there, what speed does she need to maintain in
order to reach the store on time?
Answer:
95k / 25mn = 3.8m/s
Explanation:
I did this this morning...but i'm not sure whether it's right or wrong.
What determines how a mineral cleaves? O A. The color of the mineral O B. The size of the mineral O c. The presence of silicates O D. The strengths of the bonds between atoms
Answer:
D. The strengths of the bonds between atoms
Explanation:
What are phanerograms
Answer:
Phanerogams are terrestrial plants and more advanced than the cryptogams. These are also called as flowering plants. Following are the characteristic features of phanerogams: They have well-differentiated plants i.e. the plant body is divided into distinct root, shoot, and leaves.
The spermatophytes, also known as phanerogams or phaenogams, comprise those plants that produce seeds, hence the alternative name seed plants. They are a subset of the embryophytes or land plants.
What are two ways that you could change the path of light? what materials would you need to do it?
Answer:
Light travels in a straight line until something alters its path. Here are three ways light's path can be altered: it can be refracted, reflected, or absorbed.
Materials such as a mirror or aluminum can reflect light.
Materials such as water or glass can refract light.
Materials such as coal or clack paint can absorb light.
The two different ways that a person could change the path of light are refraction and reflection of light.
What is Refraction and reflection?Reflection is the phenomena of bouncing back of the light rays when it strikes the medium such as air, water, etc on a plane. Refraction can be defined as the process of the deflection of light when it passes through a medium that lead to the bending of light rays.
The two main ways in which the light's path can be altered include refraction and reflection of light.
For example, materials such as a mirror or aluminum can reflect light, materials such as water or glass can refract light.
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DNA is genetic material that makes up living things and folic acid
Answer:
The correct answer is option (C) The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
DNA or the deoxyribonucleic acid is made up of the nitrogenous bases called the purines and pyrimidines. Folic acid or the vitamin B9 is essential for the synthesis of these nitrogen bases of the DNA. A scientific experiment conducted always has two parameters, a dependent and a independent variable. A dependent variable in an experiment is a variable which is being tested and measured. In the experiment Jon is conducting, the amount of DNA becomes an dependent variable which is being tested and measured in presence of folic acid. An independent variable in an experiment is the variable that is changed or controlled in the scientific experiment to test the effects on the dependent variable. Here, folic acid becomes an independent variable as the amount of it is varied and tested to check the formation on DNA in bacteria. Thus, an independent variable always changes to check its effect on the dependent variable.
Explanation:
Two nitrogen-containing groups are used to make urea in liver cells. What two molecules of the urea cycle contribute these two nitrogen
Answer:
NH4+ and aspartate are the two molecules of the urea cycle contribute these two nitrogen.
Explanation:
Two nitrogen-containing groups are used to make urea in liver cells. The nitrogen atoms enter the urea cycle as NH4+ and aspartate. The first step of the urea cycle take place in liver mitochondria. In liver mitochondria, NH4+ combines with HCO3- to form carbamoyl phosphate.
So,
NH4+ and aspartate are the two molecules of the urea cycle contribute these two nitrogen.
Ammonia and aspartate are the two molecules of the urea cycle contribute
these two nitrogen used in the formation of urea.
These compounds are produced in the liver through the breakdown of
amino acids in the liver. The amino acids undergo transamination and
deamination reactions which results in the formation of these compounds.
The ammonia which is highly toxic is converted into urea which is then
excreted from the body.
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Scientists warn that rising CO2 levels will have what effect on the Earth?
A
cause sea levels to drop
B
trap heat in the atmosphere causing the greenhouse effect
C
cause acid rain
D
speed up the next ice age
Answer:
B
Explanation:
Because Molecules of carbon dioxide (CO2) can absorb energy from infrared (IR) radiation. This animation shows a molecule of CO2 absorbing an incoming infrared photon (yellow arrows). ... This ability to absorb and re-emit infrared energy is what makes CO2 an effective heat-trapping greenhouse gas. And it will lead to green house effect...
Scientists warn that rising CO2 levels will have trap heat in the atmosphere causing the greenhouse effect on the earth. Thus, option B is correct.
What are scientific thinking?Scientific thinking is a type of information that includes intentional information seeking, including asking questions, testing hypothesis and making observations as well as recognizing pattern.
The scientific or scientists are clear as to the purpose at hand and questions at the issue. The scientific essential standards that should be implies on the elements of scientific thought such as clarity relevance depth, breath, logic and accuracy.
The scientific thinking prefers to thinking about the content of science and the set of reasoning process.The example of scientific thinking is that question information, conclusions and points of view which is strive to be accurate, relevant and precise.
Therefore,Scientists warn that rising CO2 levels will have trap heat in the atmosphere causing the greenhouse effect on the earth. Thus, option B is correct.
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what is the correct way to classify organisms in science
How are muscle cells and bone cells similar
Answer: A. Both make it possible for you to respond to your environment by moving.
Explanation:
All of the following options are examples of positive feedback EXCEPT:
a. increased strength and frequency of contractions as labor progresses
b.increased shivering and heat generation in response to cold temperatures
c. increased rate of fruit ripening in response to a gas released by nearby ripe fruit
d. increased platelet activation and recruitment to form a blood clot
Answer: The correct answer to the question is option B
INCREASED SHIVERING AND HEAT GENERATION IN RESPONSE TO COLD TEMPERATURES.
Explanation: Homeostasis is maintained by the control systems that detect and respond to changes in the internal environment, this is achieved effectively by the detector,control centre and the effector.
This dynamic process allows for the constant readjustment of many physiological variables.
Nearly all are being controlled by negative feedback mechanisms, positive feedback is much less common but important example is;
increased platelet activation and recruitment to form a blood clot and control of uterine contraction during childbirth.
The body temperature is one of the physiological variable that is controlled by negative feedback mechanism.
When the body falls below the preset level (close to 37°C), This is detected by specialised temperature sensitive nerve endings in the hypothalamus of the brain,where the body's control centre is located,the centre then activates mechanisms that raise the body temperature (the effectors). these includes;
- Stimulation of skeletal muscles causing shivering.
- Narrowing of the blood vessels in the skin reducing the blood flow to,and heat loss from the peripheries.
- Behavioural changed example; we put in more clothes to curl up.
When the body temperature rises within the normal range again,the temperature sensitive nerve endings are no longer stimulated,there signal to the hypothalamus will stop, therefore,the shivering stops too and the blood flow to the peripheries return back to normal.
This clearly explains option B which is the the correct answer of a negative feedback mechanism.
why is the matrix of the bone hard ?
Answer:
Due to the presence of mineral salt in the osteoid matrix, which is a crystalline complex of calcium and phosphate (hydroxyapatite). Calcified bone contains about 25% organic matrix (2-5% of which are cells), 5% water and 70% inorganic mineral (hydroxyapatite).
Explanation:
I think you answered on of my questions before or was on one of mine lol.
I am not sure but I recognize the pfp
The appearance of mineral salt in the osteoid matrix, which would be a crystalline complex of calcium and phosphate, contributes to bone hardness and rigidity.
What are osteoid matrix?The osteoid is the unmineralized, organic portion of the bone matrix that constructs prior to bone tissue maturation.
It usually initiate the formation of bone tissue by secreting the osteoid as a series of specific proteins.
Thus, due to this, matrix of bone is hard.
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I like cheese do yall like cheeeeseeeee
Answer: I like cheese
Explanation:
The muscles that laterally rotate and depress the scapula, as in shrugging and lowering the shoulders, are the __________.
In an unstable environment where growing conditions are constantly changing, which mode of reproduction in plants provides the best chance for survival, and why?
Sexual reproduction; it increases the chance of survival by producing many genetically identical offspring.
Sexual reproduction; it increases the chance of survival by producing many genetically identical offspring.
Asexual reproduction; it increases the chance of survival by introducing little genetic variation in offspring.
Sexual reproduction; it increases the chance of survival by introducing genetic variation in offspring.
Asexual reproduction; it increases the chance of survival by producing many genetically different offspring.
Answer:
The answer is D
Explanation:
HELPP :(
Which statement describes the most common ways in which students and professional scientists communicate the
results of their scientific research?
A.Students communicate results in oral reports to the class, and professional scientists communicate results in written
reports.
B.Students communicate results in scientific journals, and professional scientists communicate results in laboratory
reports.
O Students communicate results in laboratory reports, and professional scientists communicate results in scientific
journals.
O Students communicate results through secondary sources, and professional scientists communicate results through
primary sources.
The correct answer is C. Students communicate results in laboratory reports, and professional scientists communicate results in scientific journals.
Explanation:
Both students and scientists can carry out scientific research that involves studying a phenomenon by using the scientific method and scientific instruments. However, professional scientists and students differ in their level of knowledge and expertise in science. This makes scientific research made by scientists to have some differences in comparison to scientific research by students.
One of these differences is the way results are communicated. Indeed, students develop simple scientific research and the results are communicated in laboratory reports at school, colleges, etc. On the other hand, professional scientists develop complex research. Due to this, results are communicated in academic texts with strict criteria and that can be seen by other scientists, these are known as scientific journals.
who would win in a fight and how? Silver carp or paddlefish
Answer:
silver carp hope it helps
Radio and cell signals are bent around objects like mountains and tall buildings. This can allow you to still have a signal, even without a straight line to the tower. This bending of waves around a barrier or through a slit is called ______.
Group of answer choices
interference
refraction
reflection
diffraction
The bending of waves around a barrier or through a slit is called ( D ) ; Diffraction
Diffraction is the term used to describe the situation/phenomena whereby waves ( radio or cell signals ) emanating from an antenna is bent around obstacles between the antenna and the signal receiver.
Diffraction of waves is usually caused by the interference of waves with itself due to the presence of an obstacle. in order to get to the intended receiver the waves bends around the barrier through diffraction after constructive interference within itself.
Hence we can conclude that the bending of waves around a barrier or through a slit is known as diffraction
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A set of full-sibling juvenile wolf spiders was divided into two groups. One set was reared in low-temperature conditions, while the other set was reared in high-temperature conditions until they were adults. As adults, each individual was exposed to a predator at a moderate temperature and the groups exhibited very different escape behavior—those reared in low-temperature conditions fled sooner than those reared in high-temperature conditions. Which of the following can be concluded from these data?
a. Antipredator behavior exhibits a gene-environment interaction
b. Antipredator behavior is heritable
c. Antipredator behavior changes over time
d. There is an environmental influence on antipredator behavior
e. Genes and the environment affect antipredator behavior
Answer:
e. Genes and the environment affect antipredator behavior
Explanation:
Based on the data that was derived from the study we can conclude that Genes and the environment affect antipredator behavior. This is because regardless of the difference in the environment they were reared in both groups fled from the predator which is a genetic trait that has been passed down from generation. Yet, the group reared in low-temperature conditions fled sooner than those reared in high-temperature conditions meaning that the environment has affected the survival and antipredator behavior of the spiders.
• What is a virus? What are its components/structure and how does it affect the human immune system?
• What is the difference between a virus and a bacterium?
• Identify three ways that viruses and infectious diseases can be transmitted to humans and from human to human contact.
Simple short and easy search it up but try to use your own words instead of copying straight from the internet please
Answer:
Question 1 : A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.
Question 2 (how does it affect the human immune system?) : Via cytotoxic cells. When a virus infects a person (host), it invades the cells of its host in order to survive and replicate. Once inside, the cells of the immune system cannot 'see' the virus and therefore do not know that the host cell is infected.
Question 3 (what are its components?) : The simplest virions consist of two basic components: nucleic acid (single- or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.
Question 4 (what is a viruses structure?) : All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid. ... Some viruses are also enclosed by an envelope of fat and protein molecules. In its infective form, outside the cell, a virus particle is called a virion.
Question 5 : As you might think, bacterial infections are caused by bacteria, and viral infections are caused by viruses. Perhaps the most important distinction between bacteria and viruses is that antibiotic drugs usually kill bacteria, but they aren't effective against viruses.
Question 6 : through the air, soiled objects, skin or mucous membrane, saliva, urine, blood and body secretions, through sexual contact, and through contaminated food and water.
Explanation:
Which argument is correct about the growth of an organism?
Only genetic factors affect the growth of an organism.
Only environmental factors affect the growth of an organism.
The combination of genes and environmental factors affects the growth of an organism.
Genes remove the environmental factors that affect the growth of an organism.
Answer:
The answer is C
Explanation:
Just think about it. How do you grow?
What does animal cells have that plant cells don't have?
Plant cells do not have centrosome and lysosomes, but animal cells do.
Is Hydrophobie and lipophillic the same
Answer:
Hydrophobic molecules in water often cluster together, forming micelles. Hydrophobic is often used interchangeably with lipophilic, "fat-loving". However, the two terms are not synonymous. While hydrophobic substances are usually lipophilic, there are exceptions, such as the silicones and fluorocarbons.
Explanation:
Object
Mass (kg)
Potential
Energy (J)
#1
#2
#3
#4
80
40
20
40
Height
(m/sec)
4
2
2
8
Answer:
Find potential energy, velocity and kinetic energy at each given point. (contains diagram)