Newborn human babies with lesser body weight are prone to infections. heavier babies are difficult to deliver through the narrow pelvic passage of human mothers and may not survive. babies with normal body weight have a better chance of survival and can be delivered normally. what kind of selection is exhibited in this case?
a. stabilizing selection
b. directional selection
c. disruptive selection

Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses

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.

Match each description to the level of organization