Which of the following statements is true? The rock cycle starts with sedimentary rock and ends with igneous rock. Sedimentary rocks usually form beneath the Earth's crust. Sedimentary rocks usually form in visible layers. Igneous rock is formed through heat and pressure.

e

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the answer is   c.) 1575 j.

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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.

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