Answer;
-Gene flow
Explanation;
Microevolution is the changes within a gene pool occurring from generation to generation. Allele frequencies in a population may change due to gene flow, genetic drift, natural selection and mutation.
Gene flow refers to changes in allele frequency that result from migration of individuals between populations. Gene flow has the effect of minimizing the genetic differences between populations.
The three main nutrients used for energy are carbohydrates, protein, and fats, with carbohydrates being the most important source. Your body can also use protein and fats for energy when carbs have been depleted. When you eat, your body breaks down nutrients into smaller components and absorbs them to use as fuel.
Answer:
The earth has different layers because as it formed, the lighter parts (like continental crust) floated to the surface, and the really heavy parts (like iron and nickel in the core) sank to the middle. It is just like when you mix oil and water: the oil will float to the surface because it is lighter (or less dense) than the water.
Answer:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere
It is a cough. When you cough, you release air from the lungs very quickly.
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