Atestable explanation that's supported or refuted is called a/an

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

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

If a grape were placed in a hypertonic solution what would happen and why?