What structures do organisms that lack cell walls have for support

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

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an