Answer:
1. Darwin's finches
2.Darwin finches mattered to Darwin
:
Which of the following plant propagation methods requires sterile conditions?
• hybridization
• clone by layering
• root division
• tissue culture
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What is the best description of the chromosomes by the end of metaphase of mitosis?
The chromosomes reach opposite sides of the cell and begin to be incorporated into two new nuclei.
The chromosome pairs collect in a line across the middle of the cell.
The chromosomes separate at the centromere and begin to move apart.
The chromosomes have coiled and become more compact.
Answer:
The chromosome pairs collect in a line across the middle of the cell.
Explaination: i have a whole slide show i had to make for science i looked at that
Humans burn fossil fuels and wood, releasing carbon dioxide into the atmosphere. This carbon dioxide is then absorbed by trees for photosynthesis. These processes are contributory to which chemical cycle?
Carbon cycle controls the amount of carbon dioxide in the atmosphere. These processes are contributory to the carbon cycle in the environment.
What is a carbon cycle ?
The carbon cycle is nature's method of recycling carbon atoms, which repeatedly go from the atmosphere into Earth's living things and back into it. The majority of carbon is preserved in rocks and sediments; the remainder is preserved in the ocean, the atmosphere, and living things.
Life on Earth is reliant on the carbon cycle. The quantity of carbon that is naturally released from reservoirs is equal to the amount that is naturally absorbed by reservoirs because nature tends to maintain carbon levels in balance. This carbon balance must be preserved for the earth to continue to support life.
Therefore, the carbon cycle is an important chemical cycle.
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In the past, pacific sea otters were hunted to near extinction.
Without the otters, kelp forests along the coast started to die
because sea urchins, the otter's favourite food, were able to
overgraze them. Once otters became protected, the kelp
forests began to recover as the urchins were back in check.
In this kelp forest ecosystem, sea otters are a ________
species.
Enter the answer
Check it
Answer:
Keystone
Explanation: keystone
Please help if you answer correctly i will give brainliest
Answer:
1) Chicken: Codominance
2) Zebra: Independent assortment
3) Flowers: Incomplete dominance
4) Dalmatian: Law of segregation
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
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If the organisms were put in a dichotomous key for dassification, what would makethe organisms in the diagram different
from organisms that fall under the taxonomic group Bacteria?
A The organisms in the diagram are autotrophs.
B. The organisms in the diagram are unicellular.
C The organisms in the diagram are mobile and move with flagella,
OD The organisms in the diagram contain membrane-bound organelles,
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Answer:
98.9% sure it's B. as far as I know
How does movement along faults change the Earth’s surface?
Earthquakes are the result of sudden movement
along faults within the earth that releases stored
up elastic strain energy in the form of seismic
waves that propagate through the earth and
cause the ground surface to shake..
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What would happen to the food that someone ate if they didnt have the digestive enzymes they needed
Answer:
The digestive system is my favorite system! Without it you would not survive. Our digestive system is how we break down food into nutrients that feed our cells and give us energy to move, talk, grow, think, reproduce, and all the other crazy things that humans do.
Although each of the parts of the digestive system has specific and important functions, shockingly, you can survive without some of the parts. For example, morbidly obese individuals can have their stomach entirely removed in a procedure called a gastric bypass. In this surgery, the small intestine is linked directly to the esophagus thus “bypassing” the stomach. You can also live without your appendix. In fact, it sometimes negatively impacts health as it can become infected (have you ever known someone who had their appendix burst?). The appendix was thought to be a “vestigial organ” meaning that at one point in evolutionary history, we humans had a need for it, but now we don’t; however, there is recent evidence that the appendix is an important hotbed for beneficial bacteria that help us digest food.
Explanation:
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Answer:
They wouldn't be able to digest the food. It wouldn't break down like it's supposed to with the digestive enzymes.
Logging involves people cutting down trees to acquire timber for uses such as building homes and making paper. How would logging affect a pine forest ecosystem? Choose the two that apply.
Answer:
Deforestation
Explanation:
When logging is applied in pine forest the organisms in the ecosystem as to go to extinction
Answer:
It would change the plant populations in the area.
It would change the animal populations in the area.
Explanation:
Crude oil escaped from the well at an average rate of barrels per day. Calculate how many barrels of 60,000 crude oil flowed from the well from May 1 to May 31, 2010.
Answer:
1,800,000 barrels
Explanation:
60,000 barrels x 30 days
What are disadvantages of the "Aoudad"?
PLEASE ANSWER ASAP!!
Answer:
Anecdotal reports suggest aoudad out compete native big game species for food, water, and cover as well as act as a disease reservoir on Texas landscapes. If significant overlap for resources and space are occurring among aoudad, desert bighorn and mule deer, aoudad could outcompete and outgrow native populations.
Explanation:
20 Points!!!! Answer ASAP!!! Describe the process of oil extraction in complete sentences. Be sure to include information about how the process has changed in recent years.
Oil extraction is the process of recovering crude oil from underground reservoirs, in recent years, the process of oil extraction has changed, with new technologies and techniques allowing for more efficient and cost-effective oil production.
What is oil extraction?
The process of oil extraction involves drilling wells into the earth and then using various techniques to bring the oil to the surface, and the first step in oil extraction is to identify a suitable location for drilling, which is typically done using geologic surveys and other exploration techniques to locate areas with the potential for oil reserves, next step is to complete the well by installing a casing that helps to prevent the well from collapsing. Technologies such as "hydraulic fracturing," which involves injecting water and sand and assisting in the release of trapped oil and gas, have recently gained popularity.
Hence, it is the process of recovering crude oil from underground reservoirs, in recent years, the process of oil extraction has changed, with new technologies and techniques allowing for more efficient and cost-effective oil production.
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anyone know these please help me out i need a lot of help
Answer:
1. False
2. True
3. True
4. True
Explanation:
1. Not all mutations are bad! Some actually can provide people with advantages.
2. Back to number 1, yes! Some mutations can give you advantages that people would not normally have.
3. Yes! Melanin helps protect our skin from damage from UV rays from the sun. This is why people with lighter skin tend to “tan” or “burn”.
4. Yes! Mutations are often a random process. We cannot determine whether or not someone will be born with or without a mutation.
The speed of an object at a particular moment in time is known as the........
A. instantaneous speed
B. instantaneous velocity
C. Speed
D. Velocity
Answer: It would be A. Instananeous speed
Explanation: It is measured in metres per second
Doctors often use certain medications to treat infections. A few people have a reaction to some of these medications, such as itching, swelling, or trouble breathing. This is an example of
Answer: The body’s immune system overreacting to a usually harmless substance.
A reaction to some medications, such as itching, swelling, or trouble breathing is an example of hypersensitive reaction (drug allergy).
What is drug allergy?It a an allergic reaction of the body towards a medicine.
What kind of reaction is a drug allergy?It is a kind of hypersensitive reaction.
What is a hypersensitive reaction?It is an exaggerated response of a body towards an immunogen.
Why is it caused?When drugs bind to some immune cells such as T cells, they cause a release of some chemicals which causes an allergic reaction in the body.
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guys help with this plzz
brainlest even if u try ur best :
Vasoconstriction and Vasodilation
__________ carries heat from the core around the body.
As blood flows through the ______________ close to the surface of the ______, heat is lost to the body’s surroundings.
The __________________ which supply the capillaries in the skin have smooth _________ in their walls. This means that the arterioles can dilate or constrict to ____________ the flow of blood into the capillaries.
Explanation:
is it only vasoconstriction and vasodilation as the answers or are there more?
Which of the following stages of photosynthesis involves carbon fixation, reduction reactions, and the ribulose 1,5-bisphosphate regeneration?
photoreduction
light-independent reaction
light-dependent reaction
first stage photosynthesis
Answer:
light-independent reaction
Explanation:
Photosynthesis, which is a unique metabolic process where plants synthesize their food (glucose) in the presence of sunlight, occurs in two stages namely: light dependent stage and light-independent stage.
The light independent stage is also known as dark stage because it does not require light to occur. It occurs in the stroma of the chloroplast where ATP and NADPH are used to fix carbon into the production of glucose. This stage involves three major processes:
- Carbon fixation of CO2
- Reduction reactions of G3P
- Regeneration of ribulose 1,5-bisphosphate (RUBP).
Which of the following is evidence of Continental Drift?
Shape of the continents
Distribution of fossils
Distribution of geological features
All of these
None of these
Answer:
All of these
Explanation:
If you put all of the continents together, they fit like a puzzle. If you look at mountains and match these when they are put together, mountains will be in similar places. The fossils found in Antarctica were fossils from warm climates. That could only be if all continents used to be one!
Which structure does the immune system target in type 1 diabetes?
a. beta cells of the pancreas
b. liver cells that release glucose
c. insulin receptors on fat cells
d. red blood cells in the bloodstream
Answer:
The thymus plays an important role in deletion of potentially autoreactive T cells. However, the presence of islet-specific T cells in the circulation of type 1 diabetes patients and healthy subjects indicates that the thymus is not capable of efficiently deleting all autoreactive T cells (Mathis and Benoist 2009).
Explanation:
Answer:
A: beta cells of the pancreas
Explanation:
Type 1 diabetes makes the pancreas produce little to no insulin.
i would like help on this please
Photosynthesis requires light, water, carbon dioxide, and
____.
A nucleotide is made of three parts. They are: __?__, __?__, and __?__.
Answer:
Sugar, phosphate group, and a nitrogenous base.
Explanation:
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This tree is dying in the dry environment. What ABIOTIC limiting factor is affect the tree? please help
Bobcats are generally solitary and establish territories of a certain size where they hunt for food. What type of population dispersion would you expect bobcats to have?
Answer:
Uniform dispersion.
Explanation:
The bobcats' population distribution would be a uniform dispersion because they are distributed in an area in a balanced way. That is to say, that there is space between them and that each bobcat establishes its personal space when hunting and for their daily life. As they are solitary animals, they do not live in groups and only associate with other bobcats to reproduce themselves.
The diagrams show what happens to the shape of a plant cell place in distilled water. Explain why the cell swells and becomes turgid. Name the process involved.
Answer:
the name of the process should be osmosis
Explanation: Reason being that plant cells are hypertonic because they have a cell sap so when they are pout in distilled water which is a hypotonic solution, it then absorbs water by osmosis and swells up and become turgid. But they do not burst because they have a cell wall that develops a wall pressure that balances the turgor pressure exerted by turgid cells
Overtime, plants will compete, and recreate the forest.
This principle is known as...
?????
Answer:
ecological succession
Explanation:
Answer:
Ecological succession
Kingdom Animalia:
Question 9 options:
Eukaryotic
Prokaryotic
Unicellular
Multicellular
Autotrophic
Heterotrophic
Answer:
Eukaryotic
Prokaryotic
Unicellular
Multicellular
Autotrophic
Heterotrophic
Explanation:
-organism having nucleus
-organism without nucleus
-organism having one cell
-organism having many cell
-Organism that can make their own food
-Organism that cannot make their own food.
why is the late Cambrian thought of as the period of the greatest evolutionary change in life forms on earth's history?
Answer:
The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion," because of the relatively short time over which this diversity of forms appears.
How is the phytoplankton affected by the changes we see in the global carbon cycle, write the claim, evidence, reasoning.