How is cancer spread through the body? check all that apply. -through the nervous system -through the blood -through touching organs and tissue

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?

In which layer do organisms on earth love?

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body