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mixer [17]
3 years ago
9

Scientists hypothesize that oxygen began to accumulate in Earth’s atmosphere after the appearance of living things with the abil

ity to
Biology
1 answer:
antoniya [11.8K]3 years ago
4 0

Answer:release carbon emissions

Explanation:

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The term for the premature separation of the highly vascular structure that acts as communication between the mother and the emb
DiKsa [7]

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The Placenta develops in a woman's uterus during pregnancy. It helps provide the necessary nutrients and remove the needed waste from the baby's blood.

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What are the roles of covalent bonds and hydrogen bonds in the structure of DNA?
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For the answer to the question above,
 <span>DNA is made up of two nucleotide strands. The nucleotides are connected together by covalent bonds within each strand. The sugar of one nucleotide forms a covalent bond with the phosphate group of another. The two strands themselves are connected by hydrogen bonds. The hydrogen bonds are found between the bases of the two strands of nucleotides. Adenine forms hydrogen bonds with thymine whereas guanine forms hydrogen bonds with cytosine. This is called complementary base pairing</span>
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Do you think all creatures would belong in the same Kingdom? why or why not?
pishuonlain [190]

Explanation:

All animals are in one kingdom (called Kingdom Animalia); all plants are in another (Kingdom Plantae). ... Other systems have six or more kingdoms. Species are the smallest groups. A species consists of all the animals of the same type, who are able to breed and produce young of the same kind.

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How does the Sun heat the Earth?<br><br>Explain your answer in your own words.
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The sun heats the earth through radiation. Since there is no medium (like the gas in our atmosphere) in space, radiation is the primary way that heat travels in space. When the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.

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