Answer:
Crossing over is the phenomenon by which homologous chromosomes exchange DNA segments between them during the process of meiosis.
If crossing over did not occur, there will be no genetic variation among parents and offsprings.
If the process of meiosis did not occur, there will be lesser chances of genetic variations to occur. Each chromosome will be either from the father or the mother with no genetic diversity present in it. As a result, genetic diversity will reduce.
Answer: Organisms interact with the nonliving parts of their ecosystem to get food, energy, and other resources that help them survive. The nonliving parts of the ecosystem are called abiotic factors. Sunlight: Sunlight provides energy that plants and certain bacteria absorb to make their own food.
Answer:
Which of the following is true of vasodilators?
Vasolidators are drugs that helps to widen the vessels and allow free flow of blood. They dilate arterioles, thus lowering blood pressure.
Explanation:
The answer is, "<span>Chemical changes are the result of different atomic combinations."
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