During which period of the paleozoic era did the largest mass extinction occur? a. permian b. devonian c. cambrian d. carboniferous

Permian is a period of the Paleozoic Era in which the largest mass extinction occurs.

Further Explanation:

The Paleozoic Era, which ran from about 542 million years ago to 251 million years ago, was a time of great change on Earth. The era began with the breakup of one supercontinent and the formation of another. Plants became widespread. And the first vertebrate animals colonized land.In the Paleozoic Era, life flourished in the seas. After the Cambrian Period came the 45-million-year Ordovician Period, which is marked in the fossil record by an abundance of marine invertebrates. Perhaps the most famous of these invertebrates was the trilobite, an armored arthropod that scuttled around the seafloor for about 270 million years before going extinct.

The last period of the Paleozoic was the Permian Period, which began 299 million years ago and wrapped up 251 million years ago. This period would end with the largest mass extinction ever: The Permian extinction.Before the Permian mass extinction, though, the warm seas teemed with life. Coral reefs flourished, providing shelter for fish and shelled creatures, such as nautiloids and ammonoids. Modern conifers and ginkgo trees evolved on land. Terrestrial vertebrates evolved to become herbivores, taking advantage of the new plant life that had colonized the land.

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Answer Details:

Grade: High School

Subject: Biology

Topic: Mountain

Keywords:

Paleozoic, Permian period, invertebrates, Cambrian period, famous, herbivores, plant, year, ammonoids, trees, land.

digestion

it excretes wastes

1. is geographic distribution

2 is increasing complexity

3 is transitional forms