The answer to your question is 3.4
The function of the atria is to collect and pump blood into the ventricles. The function of the ventricles is to pump blood into systemic and pulmonary circulations.
Real-world efficiencies are generally very high, in the 90 percent range. FALSE.
The answer is A. selecting a variety of foods at each meal
Our body need a wide variety of nutrition that is impossible to obtain from only one source of food
In order to balance our nutritional intake, we need to eat a healthy-selected different variety of foods
