The reason people who have AIDS can't fight it off is because it is an immune disease it quickly weakens the immune system and makes a persons body too weak to fight anything off.
The answer is C- facilitated diffusion.it is a type of passive transport. In facilitated diffusion particles move from higher concentration to lower concentration. So particles move along their concentration gradients , so energy is not required.
Sand and glass have different chemical formulas, so that means that the atoms are rearranged and this is a chemical reaction.
Answer:
There are two major ways that molecules can be moved across a membrane, and ... is trying to be evenly distributed everywhere, like dropping food coloring in water. ... These channels are almost always specific for either a certain molecule or a ... When a molecule moves down its concentration gradient is it participating.
