which is a difference between the paleozoic and mesozoic era?\nanimals lived in the water during the…

which is a difference between the paleozoic and mesozoic era?\nanimals lived in the water during the mesozoic and on land in the paleozoic.\nthe first birds emerged in the paleozoic era while mammals first emerged in the mesozoic.\nmany different species of dinosaurs lived in the mesozoic, but they all died off in the paleozoic.\nanimal complexity increased during the paleozoic while the first flowering plants appeared in the mesozoic era.

which is a difference between the paleozoic and mesozoic era?\nanimals lived in the water during the mesozoic and on land in the paleozoic.\nthe first birds emerged in the paleozoic era while mammals first emerged in the mesozoic.\nmany different species of dinosaurs lived in the mesozoic, but they all died off in the paleozoic.\nanimal complexity increased during the paleozoic while the first flowering plants appeared in the mesozoic era.

Answer

Answer:

D. Animal complexity increased during the Paleozoic while the first flowering plants appeared in the Mesozoic era.

Brief Explanations:

In the Paleozoic, animal complexity grew with events like the Cambrian explosion. Flowering plants (angiosperms) first emerged in the Mesozoic era. Option A is wrong as animals lived in both water and land in both eras. Birds first appeared in the Mesozoic, not Paleozoic (contradicting option B). Dinosaurs lived in the Mesozoic and went extinct at the end of it, not in the Paleozoic (contradicting option C).