Answer:
Cretaceous
Explanation:
They began changing the way the world looked almost as soon as they appeared on Earth about 130 million years ago, during the Cretaceous period. That's relatively recent in geologic time: If all Earth's history were compressed into an hour, flowering plants would exist for only the last 90 seconds
consider the descending water. First, why does it stop descending? Second, which way is it most likely to go when it stops descending?
Answer: What are the options?
Explanation:
How has artificial selection made
farmers more productive?
A. Artificial selection has given farmers an opportunity to
study science.
B. The crops and livestock are bigger and stronger, so they
provide more food per square foot of land.
C. Artificial selection has ruined farming because crops and
livestock have become sickly.
asexual reproduction involves two-parent organisms
true or false
The most powerful possible use of CRISPR is also to insert the genes that encode the CRISPR system along with the new genes you want in an organism. Then the CRISPR genes will make changes all by themselves in all future offspring. This is called ?
Which characteristic of life describes the release of mature eggs from a
females ovaries *
which one is correct?
Answer:
The genetic code has similarities among organisms.
Explanation:
the first statement doesn't even make sense, the third one would imply that one organism will only look one way (for example, all humans have straight hair), and the 4th statement was true then the proteins we make would be miscellaneous.
Hope this helps and have a great day!.
(I wrote this is the middle of a timed test, so If I am wrong I apologize. If the answer should be incorrect though, please let me know.)
Agriculture and horticulture in a sentence
Answer:
Agriculture - The science or pratice of farming
Horticulture - Cultivation of crops
HELP ASAP ITS TIMED I ONLY HAVE 12 MINUTES LEFT!!!!!
Which of the following is an important part of a risk assessment for a potential toxicant?
A. Developing strategies to minimize risk
B. Performing a dose-response analysis
D. Performing a cost-benefit analysis
Answer:
Performing a dose-response analysis
Explanation:
A P E X
Explain the key steps of the rock cycle including the words igneous, sediment, sedimentary, metamorphic and magma.
Answer:
Igneous rock can form sediments and metamorphic rock. metamorphic rock can form magma (which cools to make igneous rock) and sediments ! Sediments make sedimentary rock , which makes metamorphic rock.
confusing, yes, but i hope this helps!
i included a pic just in case! have a good day :)
The key steps of the rock cycle including the words igneous, sediment, sedimentary, metamorphic and magma should be explained below.
Key steps of the rock cycle:Igneous rock can create sediments and metamorphic rock.Metamorphic rock can create magma which cools to form the igneous rock and sediments. Sediments could make sedimentary rock , which makes metamorphic rock.In this way, the key steps should be written.
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The plant cell's central vacuole Group of answer choices occupies a large area of the cell All choices are correct is a reservoir for water. Stores nutrients and cellular waste products.
Answer:
Stores nutrients and cellular waste products.
Explanation:
Vacuole is a space that is line with membrane and within the cell that lacks cytoplasm but filled with fluid.
They are important cytoplasmic organelles and perform certain functions such as storage, ingestion, digestion, excretion, and expulsion of excess water.
In plant, large central vacuoles enable them to attain a large size without accumulating the bulk that would make metabolism difficult.
Regeneration is a mechanism for:
A: Movement
B: Communication
C: Defense
D: Healing
Answer:
D healing
Explanation:
Answer:
Healing
Explanation:
What cell tissue helps carry messages? .
The answer ➪ The cellular tissue that helps transport messages is nervous tissue.
Insta: 25k_kemAnswer:
A special cell called a neuron is responsible for carrying these messages. There are about 100 billion neurons in the human brain.
Explanation:
Genes are located in the nucleus of a cell. But which structures in a cell are they ON?
what are 3 different types of mutation
Answer:
There are three types of DNA Mutations: base substitutions, deletions and insertions. Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types.
Explanation:
mark me as brainliest
Answer:
base substitutions, deletions and insertions.
Explanation:
Does pineapple eat us?
Answer:
yea
Explanation:
Why is it so important for us to decrease our use of fossil fuels?
A. The combustion of fossil fuels are causing a hole in the Ozone layer
B. The combustion of fossil fuels leads to an increase in atmospheric CO2 which leads to global climate change
C. The combustion of fossil fuels help us meet our energy demands, so it is not that important that we switch to alternatives.
D. Fossil Fuels do not harm the environment, but we are running out of them so we need alternatives.
help me please please
Answer: it
Explanation: I know
Answer:
B.
Explanation:
Fossil fuels definitely harm the environment, and their supply is depleting. So that takes out answers C and D, leaving A and B. The main cause of ozone depletion and the ozone hole is manufactured chemicals being released into the air. While CO2 from fossil fuels does have an effect on worsening the hole, it has a much higher effect on global climate change.
What is the structure that breaks the spindle fiber into 2?
Help !!
Answer:
The centromeres
Explanation:
The KINETOCHORE is the cellular structure that breaks the spindle fiber into TWO.
The kinetochore is a structure that associates the duplicated chromatids in eukaryotic cells to spindle microtubules during cell division (either mitosis or meiosis).
The kinetochore forms at the centromere of the chromosomes.
The kinetochore is a disk-shaped structure made up of more than 100 different proteins, especially constitutive centromere-associated network (CCAN) proteins.
In conclusion, the KINETOCHORE is the cellular structure that breaks the spindle fiber into TWO.
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What process is directly responsible for growth in living organisms?
Answer: mitosis
The increase in size and changes in shape of a developing organism depend on the increase in the number and size of cells that make up the individual. Increase in cell number occurs by a precise cellular reproductive mechanism called mitosis.
Answer: I can think of a few answers they may be looking for-
Mitosis (most likely)
or
The release of growth hormone
How many moles are in 100 grams of oxygen?
Answer:
2000 because it is the answer and its right
Answer:
15.9994 if you are converting between grams Oxygen and Mole.
Explanation:
what are chloroplast
Answer:
Chloroplasts are the organelles present in plant cells in which Photosynthesis takes place.
Answer:
hello I did it.best of luck
A gummy bear was left in a beaker of distilled water overnight. The gummy bear on the left was the original gummy and the gummy on the right was the resulting bear.
Explain what happened to the volume of the gummy bear that was left in distilled water. Use CER format to construct your answer.
Answer: The tap water contains impurities that the gummy bear was already at an equilibrium with. Therefore, if it is placed in distilled water; it would be placed in a hypotonic solution. This would cause it to swell even more and become more fragile.
Explanation:
The Gummy Bear has a partially permeable coating that allows water molecules to pass through while blocking larger molecules. Water molecules move into the bear in this osmosis experiment, enlarging it.
What is endosmosis?Endosmosis is the movement of water within cells when placed in a hypotonic solution. Water movement causes the cell to swell.
The swelling of the cells is caused by endosmosis. Exosmosis occurs when cells are placed in hypertonic solutions, resulting in cell shrinkage.
Isotonic solutions have a similar water potential to the cytoplasm, so neither endosmosis nor exosmosis occurs.
The mobility of solvent into the cell is referred to as endosmosis. The progression of solvent out of the cell is known as exosmosis.
The solvent flows from the extracellular environment into the cell. The solvent flows from the cell into the surrounding solution.
Thus, the process of endosmosis will occur in the given situation that causes that bear to swell.
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Which term best defines cancer out of these four? 1.The cell cycle interrupted and causing Gap 0 phase not to exist. 2.The cell cycle causing no cytokinesis 3.Only malignant tumors are formed. 4. A disease caused by an uncontrolled division of abnormal cells in a part of the body.
Answer: The correct answer is
A disease caused by an uncontrolled division of abnormal cells in a part of the body.
Explanation:
This is because cancer is a disease that occur when the normal body mechanism changed and stop working whereby old cells refuse to die and there is uncontrollable replication of abnormal cells in the body . This uncontrollable division of cells tend to want invade and spread to part of the body thereby forming tumors and some cancers don't form tumors such as lukemia.
Which of the following best describes mutualism?
a. Intestinal bacteria obtain nutrients from the gut and produce vitamin K used by humans.
b. Bacteria in improperly prepared food is consumed by humans, causing food poisoning.
c. Invasive bacteria at an area of injury produce toxins that damage healthy tissues of the human body.
d. Bacteria become resistant to antibacterial medication that humans use for treatment.
Answer:
b or c
Explanation:
does DNA or RNA contain guanine
Answer:
It's present in both :)
Explanation:
Answer:
they both have guanine
Explanation:
The beaker below represents
A. A hypertonic solution because water move out of the cell
B. A hypotonic solution because water will move out of the cell
C. A hypertonic because water will move into the cell
D. A hypotonic solution because water will move into the cell
Answer:
the answer is probably D
Why are the poles of the Earth colder than the tropics?
A.) the poles of the earth receives less solar radiation than the tropics because of the angle of the earth
B.) the tropics are closer to the sun, so they receive more solar radiation
C.) the poles of the earth do not receive any solar radiation from the sun
D.) the poles of the earth are further from the sun than the tropics, so they receive less solar radiation
please identify the phases of mitosis
Answer: umm
Explanation:
how
Select a claim and then write a report to Dr. Lewis explaining why you support that claim.
Claim 1: The sediment that formed the Great Plains came from the rock of the Rocky Mountains.
Claim 2: The magma that formed the Rocky Mountains came from the rock of the Great Plains.
Choose the claim that is best supported by evidence, explaining why the rock of the Rocky Mountains and Great Plains have surprisingly similar mineral compositions.
Answer: It is claim 1
Explanation: It is 1 as the Rocky Mountains weathered down into sediments which was then compacted into sediment rocks
The appropriate claim is Claim 1: The sediment that formed the Great Plains came from the rock of the Rocky Mountains.
It should be noted that the sediment that formed the Great Plains came from the rock of the Rocky Mountains. As the Rocky Mountain was eroded by erosion, there were sediments that were produced.
Cenozonic-era volcanism and erosion resulted into sediments and the sediments were transported and were later deposited to form the Great Plain. Therefore, the first claim is logically true while the second claim is incorrect.
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How many amino acids?
Answer:
huh ewan ko sayo
Explanation:
pota pota pota
I don’t know what to put please help
Answer:
it is hard to read
the first one is prokaryotes
then both
then pro
then eu
then eu
and eu
Explanation: