Answer:
This a source which energy can be extracted, used and still be transformed maybe directly or into another energy form.
Explanation:
Different energy sources can be renewable and non renewable. Fossils such as coal and crude oil are the most common sources of energy in industries and homes. Here, we can cut down fuel requirements using burners, furnaces and engines that burn the fuel more efficiently.
Alternative sources of energy include hydroelectric power, nuclear energy, wind generators and solar panels. Wood, alcohol, could also be used as alternative sources of energy. Ad these are products of photosynthesis, they are renewable.
<span>A species or group of species whose evolutionary relationships we seek to determine.
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<span>The domain that contains unicellular organisms that live in extreme environments is Archaea.</span>
Answer:
Mutations on DNA that can lead to skin cancer and other skin problems
Explanation:
A Pyrimidine dimer is a molecular lesion that causes mutations that can lead to melanomas and skin sensitivity. It is caused by a photochemical reaction after the exposition of DNA to ultraviolet light.
These mutations happen on thymines or cytosines and can be repaired by a photolyase, an enzyme that adhere the dimers.
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