What gas dominated earth’s early atmosphere? Group of answer choices

water vapor

hydrogen

Methan

Nitrogen

hydrogen for the earth was just a dusty land and was full of volcanic eruptions and meteorites colliding.

you dont brother god luck

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.