Arrange the following terms in order from smallest/least complex to largest/smallest complex.

Were you able to observe the nucleolus in any of the cells if so which ones

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.

Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance