Organisms that eat cows do not obtain a great deal of energy from the cows. In fact, they get less energy than the cows obtain from the plants that they eat. Why is this true?

The cow uses all but stores ten percent of what they eat.

Explanation:

For example, a plant produces 100 percent energy. The plant needs to use the energy for survival.

When a cow eats the plant, it only gains 10 percent of the energy.

Then, say a wolf eats the cow.

The wolf only gets 1 percent of the energy that is produced by the plant.