Why is the digestive system important? A
It carries blood through the body to bring oxygen, water and nutrients to cells.

B
It changes food into molecules that cells can use for energy, growth and healing.

C
It regulates the functions of all the other body systems.

D
It interprets information provided by the senses and sends messages throughout the body.

Abiologist counts the number of rabbits in a population each year and observes a decrease in population. since the coyote population has exploded, the biologist concludes that the coyote population has had a negative interaction with the rabbit population. which describes the biologist’s actions? a.) experimentationb.) inferencec.) observationd.) interacting