Why does the heart automatically adjust the flow of blood to match activity levels? A. Extreme activity damages blood cells and the body needs replacements.
B.
B. The heart requires more oxygen when exercising.
C.
It reduces the level of oxygen in the blood.
D. Organs and muscles require more blood under stress.

Write a paragraph about why the respiratory system is important and we need to breathe easily. (guys i really need ) x(

Which word can describe a person's gender identity? a) female b) intersexual c) asexual d) androgynous

10. think of a time when you felt that all was going well in your life financially, but then some unusual circumstance happened (i.e. car expense, hospital expense, school expense) that you did not expect which caused you to pay out money when no future income was expected to cover the circumstance. how do you plan for these unexpected expenses in the future? as a manager, how would you prepare for unexpected expenses in a healthcare organization?