Both recombination and mutations can contribute to the evolution of an organism, but genetic recombination is the primary source of the genetic distinctions between individuals in a population, and must therefore be the principal driving force behind evolution .
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Answer:
A. True
Explanation:
It is true that a V-shaped valley and no floodplain indicate a youthful, downcutting stream.
Answer: the task demands
Explanation:
According to Land and Hayhoe, thee most important factor in determining fixations when a person is making a peanut butter sandwich is the task demands.
It should be noted that the stimulus colors, orientations or the stimulus contrast levels isn't the appropriate answer.
Answer:
to provide ports to the ocean
Explanation:
East Africa is a region that has several large lakes, located on the line of divergence between the Somali and Nubian plates, better known as the East African rift. These lakes are very important for the people living in the region. They are very rich in fish, so they provide lot of food. Because hey are large, they are also used for transportation and trade. There are other usages of them as well, such as the production of hydroelectric power, and providing water for irrigation of the agriculture. These lakes though are not connected to the oceans, so the ports are not providing any access to the oceans.
