Why is there less energy in the top of the energy pyramid than there is in the bottom of the energy pyramid?

Because at each trophic level energy is wasted or released into the environment.

Explanation:

Energy transfer from one organism to another is not complete transfer.Some energy goes into the environment in some other form.

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )