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yanalaym [24]
3 years ago
14

What was the major contributor of oxygen to earth's early atmosphere ?

Biology
2 answers:
djyliett [7]3 years ago
7 0
The answer is A) photosynthesis
skelet666 [1.2K]3 years ago
6 0
I this the answer is B
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What term is used to indicate a characteristic that is shared and inherited from a common ancestor?
Alex73 [517]

The question is incomplete as it does not have the options which are:

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B) analogous trait

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Answer:

Homologous trait

Explanation:

A homologous trait refers to a trait which is derived from a common ancestor in different species present on the Earth.

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3 years ago
What are the formed elements (cell or parts of cell) in blood and what are their functions ?
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Answer:

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Explanation:

The formed elements of the blood include red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). Of these, leukocytes are primarily involved in the immune response. All formed elements originate in the bone marrow as stem cells (HSCs) that differentiate through hematopoiesis.

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