The answer is D. A, B, and C all use photosynthesis, and make their own energy. A cougar relies on killing other animals to get energy. I hope this helps!
Answer:
gas moves more freely because it has loosely arranged molecules
Explanation:
False. Specific gravity usually means relative density with respect to water. [ ]
Every time I would say, but often is the answer as theory should be revised, and also done practically so that you don’t forget the concepts
ALVEOLI are the very small air sacs where the exchange of oxygen and carbon dioxide takes place. CAPILLARIES are blood vessels in the walls of the alveoli. Blood passes through the capillaries, entering through your PULMONARY ARTERY and leaving via your PULMONARY VEIN.
