1. what three important things does the blood do as it is circulating through the body? a. supplies the body with oxygen and nutrients, and picks up carbon dioxide wastes b. supplies the body with carbon dioxide and oxygen c. supplies the body with nitrogen, oxygen, and sugar d. it does nothing at all

Answer is: A. supplies the body with oxygen and nutrients, and picks up carbon dioxide wastes.
The blood transports:
1) oxygen from the lungs to the cells of the body.
2) carbon(IV) oxide from metabolism to the lungs, where it is exhaled.
3) nutrients, transports hormones and removes waste products.

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.