Sleep problems are fairly common among both adults and children.
tf

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.

True or false. mucous membranes secrete mucus that traps pathogens.

Which word can describe a person's gender identity? a) female b) intersexual c) asexual d) androgynous