Answer: It would us valine
Explanation:
There are 4 thing that need to happen for natural selection to occur:
1) reproduction
2)heredity
3)variation in fitness or organisms
4)variation in individual characters of the population.
Answer:
The atmosphere protects earth from the suns strong rays and keeps our oxygen on earth for us to breathe. Not to mention the moon would start taking all our water. If we somehow DID survive, we would not last very long, for the earth would over heat and with no plants, animals, or water, we would either die from starvation or from dehydration. If it weren't for the atmosphere our world would be burned to a crisp like Venus!
Explanation:
