Water is a

-ionic molecule

-covalent molecule

-polar covalent molecule

-simple compound

8. The phosphorus cycle involves mainly the a. atmosphere and biosphere. b. lithosphere and hydrosphere. c. geosphere and biosphere. d. asthenosphere and hydrosphere.

Which type of engineer would you expect to be involved in food processing?

Which of the following statements is true? The moon is not lit by the sun. The entire moon is lit by the sun at the same time. Only half of the moon is lit by the sun at a time. There is no day or night on the moon.

What is the magnitude of the weight of these boxes? A. 20 N B. 30 N C. 50 N D. 70 N

What initiates an action potential on a muscle cell?

Procaryotes are distinguished from eukaryotes on the basis of what structure? (More than one answer is correct) a. a membrane-bound nucleus b. plasmid DNA c. RNA molecules d. presence of mitochondria or chloroplasts

Many higher organisms must maintain a strict internal temperature. There can be serious consequences if the internal temperature deviates even slightly.

Which is not an effect of smoking on the cardiovascular system? it contributes to atherosclerosis. it increases the blood's tendency to clot. it increases blood cholesterol. it increases the size of arteries and veins?

Which axis indirectly shows the relative amount of dna per cell?

Why are metals good conductors of electricity but covalent compounds are poor conductors