I just took the test and the answer is actually D) Because Solar cells transform radiant energy from the sun into electrical energy. It is more expensive, however, than the transformation of thermal energy into electrical energy by combustion. Therefore, solar cells would be more practical if they were LESS EXPENSIVE<span><span>.
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Fossilization can occur in many ways. Most fossils are preserved in one of five processes : preserved remains, permineralization, molds and casts, replacement, and compression.
