d) Meiosis occurs often because it allows growth and repair of body tissues in multicellular organisms.
Hope this helps!
-Payshence
RNA interference is a biological process in which RNA inhibit gene expression by neutralizing targeted mRNA molecules. RNA interference is usually brought about by two different small RNA; they are microRNA and small interfering RNA.
Because that ecosystem is covered in rocks and soil fragments. These fragments can be moved by the wind, water or even gravity.
These fragments can lead towards erosion and deposition. That is why people are trying to plant new grass and trees there so it won't get washed away when the next storm hits.
Hope this helped :)
Have a great day
A directional movement of water is ocean currents