Match each term with its description.
â  disease
a. the number of disease cases per 100,000 individuals
â  disease
b. a disease in higher than expected numbers around the world
â  disease
c. the number of deaths from a disease for every 10,000 individuals
â  rate
d. a disease found occasionally in a region with cases occurring mainly in isolation from each other
â  rate
e. a disease found regularly in a region

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