The answer to this is letter B
Answer:Activity that uses 1,500 to 2,000 calories per week is recommended for maintaining weight loss. Adults should try to get at least 40 minutes of moderate to vigorous level physical activity at least 3 to 4 times per week. Diet and exercise are vital strategies for losing and maintaining weight
Explanation:
Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them.
Explanation:The body's circulation is an essential link between the atmosphere, which contains oxygen, and the cells of the body, which consume oxygen.
3/4 should be the correct answer.
