Question

question 1 (mandatory) (2 points)
vertebrate span across a diverse array of life on earth today. fish were the first to evolve and amphibians still live with strong ties to bodies of water which is evident in their life cycle.
fossil evidence shows that vertebrates made the transition from water to land during the_____period.
a) cambrian
b) devonian
c) triassic
d) jurassic
e) cretaceous
question 2 (mandatory) (2 points)

Explanation:

During the Devonian period, vertebrates (such as early amphibians evolving from lobe - finned fish) made the transition from water to land. The Cambrian is known for the Cambrian explosion of marine invertebrates. The Triassic, Jurassic, and Cretaceous are part of the Mesozoic era, which was after the initial vertebrate transition to land.

Answer:

B. Devonian