5. Many scientists believe that the current period of global warming is related to increased levels of A. radon being released f
rom the Earth's soil. B. carbon dioxide in the Earth's atmosphere. C. hydrogen in the outermost layer of the Earth's atmosphere. D. nitrogen in the Earth's atmosphere.
muscle contraction increases interstitial fluid pressure and compresses the blood vessels within the active muscle. As a consequence, blood flow is highest when muscles relax between successive muscle contractions.
