Who is getting bored and wanna join zooom​

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?

1)some people believe that certain drugs such as marijuana should be legalized. do you agree or disagree? 2)what impact might legalization have on forensic science as a field? which drug presents the greatest challenges to forensic science? why?

The greatest increses in energy use occuree between which two stafes of society