The microvilli (just like the microvilli in the intestines) in the proximal convoluted tubule of the nephron, functions to increase the surface area of the tubule leading to a more efficient reabsorption process (as the PCT functionally functions to reabsorb solutes such as sodium, potassium, and glucose).
Environmental factors change the amount of genetic variation in a population.
They are similar to those of primary succession, primary succession occurs in an area without any initial. Succession always begins on a barren surface, whereas secondary succession be gains in environments that already possess soil. I hope this helps.
