Heat energy is transferred on Earth by the processes of convection, conduction, and radiation. How does heat energy cause materials to move during convection? Choose the two statements that apply. A. It causes colder materials to rise. B. It causes denser materials to sink. C. It causes warmer materials to sink. D. It causes less dense materials to rise.

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explanation:

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in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

∠gdh and ∠edh on edg.

answer is c