if dinosaurs were reptiles and cold blooded, what would cause the evolutionary step to become warm blooded and birds as it’s said that birds are the closest living relatives of dinosaurs.

Question

if dinosaurs were reptiles and cold blooded, what would cause the evolutionary step to become warm blooded and birds as it’s said that birds are the closest living relatives of dinosaurs.

In: Biology

Answer 1

Birds are not the closest living relatives of dinosaurs. Birds are dinosaurs. Birds are the only dinosaurs alive.

The closest living relatives to dinosaurs that aren’t dinosaurs are crocodilians.