Why do some people get lumps when they have cancer?

Producing disposable grocery bags consumes resources. recycling disposable bags is a solution that can recover some of the resources used to make new bags. which of the following behaviors could further refine the solution? a. disposing of bags by burning them b. reusing bags whenever possible c. using bags at once so that they do not break d. using only nonrenewable materials to make new bags subject is environmental science for apex users

How dose plate tectonics effect climate

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