Select your answer:
Topics:
Gene Cloning Body Movements Breathing ...Respiration Infectious Diease Composition of Blood and Blood Cells Cardio and Resp Disorders 5 Major Food Groups Nervous / Sensory System Population Ecology Health and Diseases Brain Urinalysis/ Immunology Make up Macronutrients & Micronutrients Mutation & Genetic Engineering Monoclonal AntibodiesOther quiz:
The Digestive System › ViewThe process of digestion begins in the _______.
A. Mouth
B. Stomach
C. Liver
Living Organisms › View
The heart, blood vessels, kidneys, and bladder working together are best described as
A. a cell.
B. a tissue.
C. an organism.
D. a system.