Answer:
the answer is D: the the preservation of species
Explanation:
They determine the north and south ends
Yes, because there is only so much weight it can hold.
Answer:
See below
Explanation:
There are several reasons that genetic variation occurs. Some of them are as follows: mutation, random fertilization, recombination event during meiosis etc. The way in which this variation in genetics is distributed is in a continuous way. In case of the human species, it is reported that 85% of all variation is within a certain population, while the remaining 15% of genetic variation is between populations.
1st image I think would be the answer