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____ [38]
1 year ago
11

What THREE traits do pcculations have that allow for natural selection? 3F

Biology
1 answer:
natita [175]1 year ago
6 0

Answer:

a struggle for existence, variation and inheritance. These are said to be the necessary and sufficient conditions for natural selection to occur.

Explanation:

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What is the greatest source of canton that enters the ocean from the atmosphere ?
8_murik_8 [283]

Answer:

Carbon is an element that is essential to all life on Earth. Carbon makes up the fats and carbohydrates of our food and is part of the molecules, like DNA and protein, that make up our bodies. Carbon, in the form of carbon dioxide, is even a part of the air we breathe. It is also stored in places like the ocean, rocks, fossil fuels, and plants.

The carbon cycle describes the flow of carbon between each of these places. For example, carbon continually flows in and out of the atmosphere and also living things. As plants photosynthesize, they absorb carbon dioxide from the atmosphere. When plants die, the carbon goes into the soil, and microbes can release the carbon back into the atmosphere through decomposition.

Forests are typically carbon sinks, places that absorb more carbon than they release. They continually take carbon out of the atmosphere through the process of photosynthesis. The ocean is another example of a carbon sink, absorbing a large amount of carbon dioxide from the atmosphere.

Some processes release more carbon dioxide into the atmosphere than they absorb. Any process that uses fossil fuels—such as burning coal to make electricity—releases a lot of carbon into the atmosphere. Raising cattle for food also releases a lot of carbon into the atmosphere. These processes that release carbon into the atmosphere are known as carbon sources.

Ideally, the carbon cycle would keep Earth’s carbon concentrations in balance, moving the carbon from place to place and keeping atmospheric carbon dioxide levels steady. However, the carbon cycle is changing because of human activity. People are releasing more carbon into the atmosphere by using fossil fuels and maintaining large livestock operations. Deforestation is depleting Earth’s supply of carbon sinks. As a result, the amount of carbon in the atmosphere is rising.

Explanation:

hope this helps

mark me please

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2 years ago
What are mushrooms classified as
timofeeve [1]
Mushrooms are fungi. 
8 0
2 years ago
Meiosis differs from mitosis in the __________. a. way in which sister chromatids separate b. number of cells produced immediate
densk [106]
Meiosis differs from mitosis in the number of chromosomes in each ending cell. In addition, one of the purposes of meiosis is to reduce the chromosome number in each cell by half and meiosis contains two rounds of division which is meiosis I and meiosis II and ends with four gametes that are not the same genetically. 
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Damage to the ozone shield over the united states is likely to cause
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2 years ago
What is an organelle
Setler [38]

Good afternoon. An organelle is any structure in cells that has a specialized function. They are usually found in eukaryotic (nucleus) cells. They help with energy, making proteins, and removing wastes from a certain area. They are composed of large molecules such as proteins, carbohydrates, lipids, and nucleic acids. I hope I helped!! If you have any more questions then don't hesitate to let me know. Have a great day!!

4 0
3 years ago
Read 2 more answers
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