The respiratory system works with the system to add oxygen to the blood and remove carbon dioxide from the body.
digestive
excretory
circulatory

Which person should increase calorie intake due to a lifestyle choice? a. an adult who is often sedentary b.an athlete c.a student getting ready for school exams d.an older woman

What is the conversion factor and amount of tuna she needs 150 students?

Which of the following is a lifestyle behavior? a. getting enough sleep b. exercise c. tobacco use d. all of the above