When the concentration of molecules on both sides of a membrane is the same, the molecules will
a. move across the membrane to the outside of the cell.
b. stop moving across the membrane.
move across the membrane in both directions.
d. move across the membrane to the inside of the cell.
c.
select the best answer from the choices provided
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Which best compares habitat and niche? o niche is a place in which organisms live, and habitat is the way in which an organism fits into its habitat. o habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat. habitat is a group of organisms that live in an area, and niche is a specific species that lives in that areao niche is a group of organisms that live in an area, and habitat is a specific species that lives in that area.

When plants use sunlight to make food, the energy of sunlight is

What is the most abundant vertebrate on earth?