Answer:
generic variation helps species survive because it gives there offspring there traits to survive
Explanation:
Bacteria !!!!!!!!!!!!!!!!!!!!!
It can effect many things including things in the area of the farm and the water. This happens when runoff occurs.
Polarity- Epithelium is arranged so there is one free surface (apical surface) and one attached surface (basal surface)
Cellular nature– Cells in epithelium fit closely together side by side and sometimes atop each other to form sheets of cells.