I got the same question and I just guessed
"resting membrane potential"
Resting potential occurs when membrane potential isn't altered by action potentials. When a membrane is polarised and there's no sinaptic potentials or any other active change of the membrane potential we are before a resting membrane potential.
Answer:
A food chain shows you how one organism eats another and transfers its energy.
Explanation:
For example, a zebra eats grass, and the zebra is eaten by the lion.