How does the human impact of fertilizers impact the nitrogen cycle?

When explaining dominant and recessive traits to a younger family member, they respond, "well chances are i can probably taste ptc, since dominant traits are more common." how might you address this misconception?

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol