Answers to A, B,C?? Need them ASAP!

Enzymes affect the reactions in living cells by changing the

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.

Aman applies a force of 500n to push a truck 100m down the street how much does he do?