Topics: Atoms and Radioactivity Quiz
What makes something radioactive?
A. elements with an atomic number above 81
B. an unstable nucleus
C. contaminated sewage
D. It decays over time
Select your answer:

Topics:
Life Processes Sensory System Key Terms Muscular System Transportation Cardiopulmonary Circulatory System - Pathway of Blood Transport System Human Health Cardiorespiratory System Properties of the Hair Nutrition & Wellness Skeleton and Muscles The Musculoskeletal System Malaria Physical ActivityOther quiz:
Circulatory / Respiratory › ViewThe “lub,” or first heart sound , is produced by the closing of
A. the aortic semilunar valve
B. the pulmonary semilunar valve
C. the tricuspid valve
D. the bicuspid valve
E. both AV valves
Medical, Legal, and Ethical Issues › View
Lividity in a patient can tell you:
A. How the patient died
B. Their temperature
C. How they were positioned when they died
D. Their age at the time of death