Why were there no living inhabitants on earth for the first billion years?

1 answer:

Nutka1998 [239]3 years ago

4 0

There was no life on Earth for the first billion years because the atmosphere was not suitable for life. Earth's first atmosphere had lots of water vapor but had almost no oxygen. Later, frequent volcanic eruptions put several different gases into the air.

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PSYCHO15rus [73]

Answer:

Plants.

Explanation:

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Which of the following is NOT a type of Devonian arthropod?

mamaluj [8]

Answer:

D) None of the above

Explanation:

Arthropods are characterized by the possession of an exoskeleton and a segmented body. This group includes insects, arachnids, myriapods (centipedes and millipeds), and crustaceans.

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The heritable variation is defined as the variance of the breeding values among individuals.

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In which phase of meiosis will sister chromatids seperate and move to opposite ends of the cell?

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