Which describes the role of vitamins?
a)vitamins provide structural materials for cells.
b)vitamins are a source of energy.
c)vitamins manufacture amino acids.
d)vitamins the body use other nutrients.

Suppose you calculate that elasticity of demand for cigarettes is 0.5. you can conclude that: a. demand for cigarettes is elastic b. demand for cigarettes is unitary elastic c. a 1% increase in price of cigarettes will result in a 0.5% decrease in quantity demanded d. a 1% increase in the price of cigarettes will result in a 0.5% increase in quantity demanded.

Match each child care option with its benefits. a. no child care expenses b. likely to have values similar to those of the parents c. lots of one-on-one time with a provider d. care offered at schedule hours 1. family member or friend 2. private child care 3. day care 4. stay at home parent

How can a person  best  reduce the risk of injuries on the road?