Complete the passage to describe the function of the heart. The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. The upper chambers of the heart are called , and the lower chambers of the heart are called .

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?

This is the process of making a prediction based on the results of prior observations of similar events.

Astore manager timed janette to see how long it would take her to fold and put away a sweater, a shirt, a pair of pants, and a scarf. it took her 26.1 seconds for the shirt, 24.3 seconds for the sweater, 32.8 seconds for the pants, and 18.2 seconds for the scarf. what was the average time it took janette to fold and put away all four items? during a catered lunch, an average of 4 cups of tea are poured per minute. the lunch will last 2 hours. how many gallons of tea should the caterer bring if there are 16 cups in one gallon?