Please answer this question... please

Particles vibrate in a rigid structure and do not move relative to their neighbors.

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.

What is the chemical name of the compound ti2o3? use the list of polyatomic ions and the periodic table to you answer.