D. The mantle is the densest part
Answer:
Dams
Explanation:
Tornadoes and earthquakes are both natural disasters, so humans would have no impact on this. Dams however are man made structures used to keep water from its natural flow. Therefore, dams are a result of humans interacting with their environments.
It might be the amosophere, it prevents the air or oxegen from escaping so it just might prevent heat too!
<span>Copper and zinc are elements, not mixtures. Bronze is an alloy of texture of copper and tin, not a mixture. The answer would be (C.)Sand.
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