Ions that move across the cell membrane from low concentrations to high concentrations are most likely * diffusing through ion channels. using energy during the process of active transport. moving through a protein. both (a) and (b).

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.

sex cells are usually half's then they find another half and make a fertilize egg