Are caused by the tilt of the Earth's rotational axis away or toward the sun as it travels around the sun
The answer is C and D.
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Answer:
Most damage to DNA is repaired by removal of the damaged bases followed by resynthesis of the excised region. Some lesions in DNA, however, can be repaired by direct reversal of the damage, which may be a more efficient way of dealing with specific types of DNA damage that occur frequently.