Why are the levels at the top smaller and the ones on the bottom larger in the energy pyramid? asap

Because as each organism goes up, there's less energy being given. Here's an example.

Take a plant, it has 100% of its energy. Then it's eaten by a deer, which could be the Primary Consumer. The deer has 10% of the beginning energy. Then, the deer is eaten by a wolf, a Secondary Consumer, which then has 1% of the energy.

100%sorry if i’m wronghope this good luck: )