Ques:You are presented with the question "Flowing water can slowly _ carbon in limestone." and the following answer choices: - alter - destroy - erode - allow growth - dissolve - heat - a solute - rain Now knowing that flowing water can slowly dissolve carbon in sedimentary rock and limestone is an organic, sedimentary rock, choose the best answer.

Ans:dissolve
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Ques:You are presented with the question "Which of these produces hydropower?" and the following answer choices: - deuterostomes - Wind Turbines - power stations - Suez Canal - trout - Old Faithful Geyser - Hoover Dam - stations Now knowing that hydropower requires damming a river and hoover Dam, the first dam on the Colorado River below Grand Canyon, was built between 1931 and 1935, choose the best answer.

Ans:Hoover Dam
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Ques:You are presented with the question "What are the key cells in an allergy attack?" and the following answer choices: - layers of fat - Lymphocytes. - fur and fat - bone cells - muscle cells - the skin - Red blood cells - animals Now knowing that lymphocytes are the key cells involved in the immune response and an allergy attack is an immunal response, choose the best answer.

Ans:Lymphocytes.
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Ques:You are presented with the question "what has a positive impact on an animal 's ability to be a carrier for life?" and the following answer choices: - four limbs - staying frosty - staying isolated - prolactin release - staying warm - staying mad - coded genes - organic molecules Now knowing that staying warm has a positive impact on an animal 's survival and animals that survive develop an immunity, but are also carriers for life, choose the best answer.

Ans:
staying warm
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