Answer:
c. mutation and natural selection
Explanation:
The major forces causing the genetic divergence of the two populations are <u>mutation and natural selection</u>. Natural selection results when organisms adapt to a prevailing environmental condition, those who are unable to adapt, die out. The adaptation for survival is passed on to the next generation. mutation on the other hand is a change in gene structure which results in a new variation in the population. This variation can be passed to the next generation.
Answer:
U-shaped valleys, also called trough valleys or glacial troughs, are formed by the process of glaciation.Examples of U-shaped valleys are found in mountainous regions throughout the world including the Andes, Alps, Caucasus Mountains, Himalaya, Rocky Mountains, New Zealand and the Scandinavian Mountains.
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I would say C, because the smoke from coal consumption emits a large amount of carbon dioxide.