Answer:
mutation, recombination, and immigration of genes.
If a filter in a fish tank creates a steam of flowing water near the edge it might overflow
Answer:
I think it just all exists at once, if it never is created or destroyed. It must have just appeared at the same time at some point. It doesn't exactly come from anywhere, but that's my opinion. There might be another scientific answer out there, but that's what i think. I hope this helps.
Explanation:
D is the answer (Aa and aa ) i hope this helps
3, definitely. The other answers are all harmful to the environment or flat-out wrong. At least it gets the economy going and lets more people make a living... even if it's hurting the ozone.
