Most of the energy we use on Earth originates from the Sun.
O True
O False

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

look at this it will give you up to 17 answers  

answer///alimentary canal/gastrointestinal tract.digestive (gi);