Vital organs are protected from harm by a. muscles b. bones c. tendons d. ligaments

Which statement best compares aerobic and anaerobic respiration

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what

Which of these internal feedback reactions does not need your brain? oa. your leg jumping when it is hit by a reflex hammer b. your deeper breathing when you need more oxygen c. your body temperature rising when you have an infection d. your heart beating faster when you are in danger