The answer is; desertification
Topsoil is usually the riches soil in terms of nutrient is important in support of plant vegetation. It is rich because it contains humus and other decomposed materials that recycle nutrients. When the topsoil is washed away, the local region becomes barren in that it cannot support vegetation. This causes the area to turn into a desert.
Human,increase population and Overharvesting
Secondary succession occurs after the initial succession has been disrupted and some plants and animals still exist. The disruption occurs afer an event like a forrest fire or hurricane destroys the forest.
Answer:
They will have A or answer choice C
Explanation:
They're both types of active transport that are the intake of something into a cell. Khan Academy has a great article on this. I recommend checking that out.
