<span>B is the correct answer. The beginning of DNA replication occurs with the unwinding of the DNA helix by a special enzyme. The two strands that form the helix then create a replication fork. The two strands are then oriented differently, one becoming the 'leading strand' and one the 'lagging strand'. </span>
Answer:
The development of all karst landforms requires the presence of rock which is capable of being dissolved by surface water or ground water.
Explanation:
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Answer:
carbondioxide last in about 300 to a 1000 years in the atmosphere
Answer:
Answer
Explanation:
The wind and water can break down the landscape and affect its physical formation. Water for example can break down rocks and make a ditch from 1 foot deep to 6 feet deep.
