It takes place <span>between the alveoli and capillaries, which are located in the walls of the alveoli.</span>
Answer:
<em>I</em><em> </em><em>t</em><em>h</em><em>i</em><em>n</em><em>k</em><em> </em><em>i</em><em>t</em><em>s</em><em> </em><em>A</em><em>.</em>
Explanation:
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<span>During photosynthesis, plants use carbon dioxide and produce oxygen. During metabolism oxygen is used and carbon dioxide is a product. Humans impact the carbon cycle during the combustion of any type of fossil fuel, which may include oil, coal, or natural gas.</span>
Answer:
There needs to be enough sea urchins for otters to come and there needs to be enough otters to eat the urchins.
Explanation:
