1.) what are some cleaner options to produce energy? How do they work? 2.) what are the effects of air pollution on the environment and people?

this website is for anybody really not just for girls just saying, also while a lot of males are mean and you know there are the few who are kind and then there's the nice-guys but then theirs also guys like me who are shy we don't get out much because there are people like you who exist who would most likely punch a guy in the face so next time just think about things before you post them to a website where guys and girls can see your question.

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying

it would lead to upper respiratory infections and pneumonia.

cell division is not regulated in tumor cells.