Answer:
For early earth, it was filled with loads of oxygen and could kill humans if they breathed the oxygen that was in the air about 100 million years ago. This massive amount of oxygen cause massive creatures like the dinosaurs to exist. Current earth has an atmosphere with not too much oxygen.
Explanation:
brainliest
The answer is b thank and rate my answer for 30 points they come in in 35 minutes
Answer:
a large warship that carries planes and has a long flat deck for takeoffs and landings
Explanation:
