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AveGali [126]
3 years ago
6

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 s

entences.
Scientists have found
containing fossilized 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
(devoid of oxygen) and acidic.
Biology
2 answers:
Vlad [161]3 years ago
6 0

Answer:

"Scientists have found containing fossilized 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 (devoid of oxygen) and acidic."

However, the cyanobacteria produced oxygen as a waste product, as cyanobacteria are photosynthetic. This eventually lead to the Great Oxygenation Event, as this nearly killed off the cyanobacteria as a whole. Although, a few plants at this time used oxygen in their own metabolic processes. This allowed these plants to grow and breed faster. This lead to today, where the majority of multi-cellular life on Earth started from these oxygen-sucking plants, not the cyanobacteria.

Explanation:

sammy [17]3 years ago
5 0

Answer:It was both toxic and regulare

Explanation:

Toxicity depended on the area.

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Prior to 1900, sea levels rose at maximum, 4 cm per year. Since 1900 sea levels have risen 11 cm per year.

<h3>How sea level is measured?</h3>
  • Tide stations and satellite laser altimeters are the main tools used to measure sea level.
  • The height of the sea as measured along the shore in relation to a particular place on land is what tide stations all around the world tell us about what is happening locally.
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Marizza181 [45]
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