1. the main function of the digestive is to

a. break down large molecules into small molecules and absorb nutrients
b. excrete oxygen and carbon dioxide
c. synthesize minerals and vitamins needed for a healthy body
d. remove waste products from the blood

2. the basic unit of structure and function in the nervous system are

a. neurons
b. axons
c. dendrites
d. neurotransmitters

3. the central nervous system consists of

a. sense organs
b. reflexes
c. brain and spinal cord
d. sensory and motor neurons

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !