Where are the cells of the adaptive immune system found in humans?

What field of science did harry hess study?

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

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