And: Facilitated diffusion is a type of passive transport that allows substances to cross membranes with the assistance of special transport proteins. Some molecules and ions such as glucose, sodium ions, and chloride ions are unable to pass through the phospholipid bilayer of cell membranes.
The answer is energy i am pretty sure
The first one is to absorb calcium.
second question: I THINK poor wound healing
Answer:
A troposphere is the word that i dont know what it means