SAT, 29.04.2021 19:50 parosil

Select the correct answer from each drop-down menu. David is a research scientist who is giving a lecture to a class of students on how life began on earth. Help him complete the sentences.

Scientist have found 1) containing fossilize cyanobacteria (blue-green algae). They show that life has been present on the earth from early ages. Oparin and Haldane were two scientists who hypothesized that life needed reducing environments initially to appear. The ocean in the early ages was 2) (devoid of oxygen) and acidic.

ANSWER OPTIONS:

1)

A) shells
B) stromatolites
C) rocks

2)

A) anoxic
B) toxic
C) pyrexic

Answers: 2

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Select the correct answer from each drop-down menu. David is a research scientist who is giving a...

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