cross- contamination may cuase food poisoning because . -bacteria grow in the temperature danger zone. -microorganisms may be transferred from one food to another. -bacteria can form if food is left out for four or more hours. -microorganisms may creat toxins in the body.

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Anton created a chart listing different types of materials. which best complete the chart?

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed