It means that his autonomic(sympathetic) nervous system is activated.
Answer:, facilitated diffusion differs from passive diffusion in that the transported molecules do not dissolve in the phospholipid bilayer. Instead, their passage is mediated by proteins that enable the transported molecules to cross the membrane without directly interacting with its hydrophobic interior.
Explanation:
I think its answer c . Bacteria
The rock walls would be wethered down by the water and would chip off and be grinded down
I'm having trouble on this too :(
