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Which is a correct feedback like relation in Earth's evolution?

Answer and explanation

Correct answer: Life increased oxygen and oxygen improved conditions for further life development

A feedback relationship exists when two parts of a system affect each other in a continuing cycle. Life can change its surroundings, and those changed surroundings can then create better or worse conditions for life. In Earth's history, early life forms contributed to increasing oxygen in the atmosphere. More oxygen later supported organisms that depended on oxygen and helped make further biological development possible.

Option A is correct because it shows this two-way relationship between life and the atmosphere. The other options describe impossible or unsupported relationships: solar wind did not make Earth's core, oceans did not create gravity, and ozone did not form the first atmosphere. The example in A therefore best represents feedback-like interaction in Earth's evolution.

Related tags

FeedbackOxygenBiosphere

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