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professor190 [17]
3 years ago
6

A girl travels 20 miles on her bicycle the trip takes 2 hours express her speed in miles/hr

Biology
1 answer:
stepan [7]3 years ago
6 0

Answer:

The girl traveled 10 miles per hour

Explanation:

If the girl traveled 20 miles in 2 hours then she would have traveled 10 miles in one hour. you divide the amount of distance by the time

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Directional selection is a type of natural selection that favors one extreme phenotype over the mean or another extreme. Examples of directional selection include giraffes that have long necks and the darkening of London's peppered moths after the Industrial Revolution.

Stabilizing selection, also known as purifying selection, is a type of natural selection in which genetic diversity decreases as the population stabilizes on a particular trait value. An example of stabilizing selection is birth weigh in humans.

Disruptive selection is a type of natural selection that shows a preference toward the reproduction of genetic material at the extremes within a population.One of the most studied examples of disruptive selection is the case of ​London's peppered moths.
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