Answer:
Gabrielle is writing a research paper on the physiological effects of commonlyused drugs, such as caffeine
Brian had made his bow, but when he shot it for the first time it exploded into splinters and nearly blinded him. He then made a new bow that still missed the fish when it shot. Finally he realized that water refracts, and he had to aim the bow just under where it looked like the fish were in order to actually hit them. Catching his first fish was an incredible moment, and he realized that now that he had figured out how to get food, he had a way to live. He cooked that fish and more that he caught over the fire, and nothing ever tasted so good.
Answer: subordinate clause (also called: dependent clause) .
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