<span>The statement is a hypothesis rather than a theory because it depends on the volume of the rainfall on sand dunes increases, therefore, there will be a result or conclusion that the erosion of the sand dunes will also increase.</span>
Answer:
Option B . Chemosynthesis and Marine snow.
Answer:
Explanation: In facilitated diffusion, molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers. A concentration gradient exists for these molecules, so they have the potential to diffuse into or out of, the cell by moving down it.
