Answer:
the composition of a population gene can change over time through evolution
Explanation:
Nature selects
Answer:
Extraction of oil from tar sands is not economically feasible.
Explanation:
B
The other problems are not as easily solved; whereas, data collection over long periods of time is possible and was already done in the past, eg temperature and weather patterns. Therefore, this is the easiest limitation to overcome.
Answer:
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