I need chemistry help asap it’s my final exam

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

Which proportionality applies to avogadro’s law?

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.