Sequence how oxygen accumulated in the atmosphere and the effect it had on life by completing the flowchart

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

Which label identifies the part of the atp molecule that changes when energy is released in the cells of all living things

The climate on the leeward side of a mountain differs from that on the windward side mostly in