Answer:
For regulating activities of cell.
Explanation:
Ad nucleus consists of genetic materials like DNA,RNA which is responsible for controlling and directing all the activities of cell.
The new trait appears in a group of previously isolated people is an
example of genetic drift.
<h3>What is Genetic drift?</h3>
This is defined as the random fluctuations in the frequencies of alleles
from generation to generation due to occurring events which makes the
trait to be present or disappear.
The new trait appearing as a result of events such as migration helps to
infer that it is genetic drift.
Read more about Genetic drift here brainly.com/question/1027688
C. Accelerating upward
Has to do with Newtons 2nd law of motion.
F=MxA. Mass times acceleration
So acceleration upwards the scale is pushing back on your normal weight plus your mass and the acceleration rate of the elevator car.
The opposite occurs when descending.
If at a constant speed/velocity, equilibrium occurs and weight exerted by ones body stays the same.
Im pretty sure its cell, species, biosphere. Hope i can help :)
