I would go with A. It seems the most obvious to be correct plus it is true.
Two processes that can create genetic diversity in a population are mutation and recombination.
In every experiment, there are experimental unit. The experimental units in this experiment is the students in the four classes.
- The experimental unit is referred to as the person, animal, or object that is the subject of the experiment.
The Experimental units is known to often receive different treatments from one another in an experiment.
The experimental method used often has a lot of manipulation of variables so as to establish cause and effect relationships. The unit is the object to which the treatment is randomly given to. If the experimental units are human beings, they are referred to as subjects.
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Answer:
Small island, far from a continent
Explanation:
First of all, you need to know that the island community is a term that refers to the areas formed by islands and all the factors that compose it, such as the fauna and flora present there. These communities can be affected by several physical and biological factors that modify the ecological tolerance of the place. In general, we can say that small islands away from the continent have a lower ecological tolerance due to the isolation in which they find themselves. This is because distance limits the integration between ecological factors.
Answer:
14th centuries of the third-wave era:
By the middle of the 13th century , the chenghis khan controls the asia from the coast of china to black sea. Beginning with the agrarian civilisation, societies started to connect into large network of exchange is called trade. trade was important from the beginning.
As early 2300 BCE , civilisation in Mesopotamia in Egypt and Indus valley were in commercial relationship. Silk road enable small scale exchanges to expand dramatically , when the silk road is first opened , there has been opportunity for trade , the eastern end of silk road has been unsafe because the Chinese inability to control the nomads of mongols.