Look at the graph below. which statement is true based on the graph of an egg draw. a the speed of the egg is constant b the egg is not accelerating. c the egg is accelerating. d the speed of the egg is decreasing

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

When are the centromeres broken in meiosis?

Animals have a variety of adaptations,including trachea and gills, which allow this key process to occur. which provides the molecules necessary for cellular respiration and efficient atp synthesis?