WHAT TO MATHEMATIC TO MOST EARTH AND TERI TO DERI AND OUT?

Anybody who knows ap biology, can you friend or message me

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

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?