When does facilitated diffusion occur? a) When certain large molecules are unable to move through the membrane
without the help of channel proteins
b) When one liquid has a higher osmotic pressure than the other
c) When ATP is available to assist in moving molecules
d) When there's a strong membrane potential present, with the inside of the cell
being more negative than the outside of the cell

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

a. the production of carbon dioxide through the process of photosynthesis

tttccgugdfhhsvhsfghc

explanation:

yooptfrhtr