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Nikitich [7]
2 years ago
10

Do all animals share a common ancestor?

Biology
1 answer:
Nastasia [14]2 years ago
6 0

Answer:

The most recent common ancestor of all currently living organisms is the last universal ancestor, which lived about 3.9 billion years ago. ... 6,331 groups of genes common to all living animals have been identified; these may have arisen from a single common ancestor that lived 650 million years ago in the Precambrian.

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Answer;

B. improved ecosystem health

Explanation;

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-The environmental impact of mining includes erosion, formation of sinkholes, loss of biodiversity, and contamination of soil, groundwater, and surface water by chemicals from mining processes.The environmental effects of surface mining include;

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alexandr402 [8]

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Explanation:

4 0
1 year ago
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Most ______ are made up of monomers linked into polymers.
Novay_Z [31]

Macromolecules are mostly made up of monomers linked into polymers.

<h3>What are macromolecules?</h3>

Macromolecules are made from subunits or building blocks of monomers. These monomers combine with one another through covalent bonds to form larger molecules that are called polymers.

Therefore, macromolecules are made of monomers which are subunits that make up polymer.

For more details on macromolecules kindly check brainly.com/question/5246898

7 0
2 years ago
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Hope it helps

Explanation:

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Answer: Hydrogen

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Because it is the element that everything is created with it is everywhere. All life has hydrogen in it, our air, SPACE, everything.

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