Question

Why was the development of proto-amphibians so significant to life on early earth?

A. We’re the first organisms with bilateral symmetry
B. We’re the first organisms to reproduce sexually
C. We’re the first organisms not confined to a water environment
D. Contributed huge amounts of oxygen to the atmosphere

Answer 1

C

Step-by-step explanation:

Proto-amphibians were not confined to water like their ancestors were.