Answer:
The early atmosphere was probably mostly carbon dioxide, with little or no oxygen. There were smaller proportions of water vapor, ammonia, and methane. As the Earth cooled down, most of the water vapor condensed and formed the oceans.
Answer: 100% are round because they have the dominant trait (F)
The second one is 0%
Explanation:
cells?
it would help if you gave the options :)
B C and E
