Which of the following is an example of a positive feedback mechanism?
A. During childbirth, the baby's head pushing on the cervix
encourages uterine contractions.
O B. The kidneys retain more water if the organism's water level is
low.
O C. Insulin causes cells to absorb glucose.
O D. Body temperature is increased if skeletal muscles move
quickly and cause a person to shiver.

Which of the following is a true statement? a. individuals evolve to have adaptations. b. individuals have adaptations that can change over time. c. individuals have traits that may or may not make them successful at reproduction. d. populations cant evolve, only individual organisms.

Ascientist observes certain changes in the physical features of a particular species over time. she concludes that the species has undergone evolutionary change. she wants to study the animals by analyzing their population. she’ll use . the population of this species is decreasing considerably. if this trend doesn’t change, this species will fall under the category of animals. this is a plato question,i need to make up his biology credit.

Can you answer all these questions?