Most food chains in europe a predator which of these is the best definition of a top predator

An animal that has no competition and is top of the food chain it kills and eats all but nothing kills or eats it

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.