Answer:
some traits become more common, others less. ... The traits that become more common are the ones that are “adaptive” or “increase fitness” (that is, a creature's chances of living longer and producing more offspring).
Answer:
D
Explanation:
It is often like this: cell->tissue->organ->system
Answer:
C
Explanation:
neon doesn't make up the atmosphere... or does it jk it doesn't
2,8,6
lol just use google
