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The effects of exercise on the circulatory system. This provides the muscles with the necessary oxygen and nutrients to provide the muscles with energy. During exercise strokevolume increases because: more blood is sent back to the heart due to the muscles squeezing blood in the veins. and I'll try to answer the other one just wait
The right answer for the question that is being asked and shown above is that: "<span>The reefs are an essential part of the ocean’s ecosystem, and when people build structures on top of them, they are easily damaged because they are so fragile."</span>
This structure also helps your brain's two hemispheres communicate with one another; it is called the corpus callosum. Again, the corpus callosum allows the right and left hemispheres of the cerebral hemispheres to communicate with one another. Hope I helped.
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Explanation:
just search what a primary consumer is
