Select your answer:
Topics:
Leaves Components of Blood Urinary System Medical Terms Human Anatomy and Physiology - Types of Tissues Disease and Immunity Body Fluids and Blood Cells Schizophrenia Human Eye and Colourful World Anatomy and Histology Hair Evidence Components of Food Organisms Organic Compounds, Minerals and Enzymes Body Systems and Medical Sciences Nervous / Sensory SystemOther quiz:
Body Fluids & Circulation › ViewPulse pressure is ______ mm Hg
A. 40
B. 25
C. 120
D. 80
Psychology › View
What is a theory?
A. a guess on how something works
B. a tested conclusion accepted as true
C. a story explaining how the world works
D. an assumption