what might happen if two friends are miss handling a firearm with no supervision? Does this have to do with genetics or choice?

Why should the united state be concerned about air pollution in china?

If vegetable oil is made out of veggies, then what is baby oil made out of?

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data