Q: Mammals must eliminate waste products that their bodies produce. Which organ helps mammals eliminate bodily waste?
A: kidney
Q: Which has the greatest effect on aiding the movement of blood through the human body?
A: gravity
Q: Which of the following is a characteristic of all chemical changes?
A: A new material is formed.
Q: Researchers are developing new types of crop plants with desirable characteristics such as disease resistance and drought tolerance. Crossing plants so that the next generation will express desirable traits is best described as
A:
selective breeding.