Which of these is an organ? a) blood cells b) the stomach c) connective tissue d) the respiratory system

Ecology can best be described as the study of what

Explain the causes and effect of damage to the genetic code.

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