How do the independent and dependent variables in an experiment compare? a. the independent and dependent variables are the exact same as each other. b. the independent variable controls the dependent variables. c. the independent and dependent variables have no effect on each other. d. the dependent variable controls the independent variables.

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Two critical interventions to turn around the opioid crises are:

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased