If the moon revolved around Earth twice as fast, would solar eclipses be more or less frequent
A. More frequent, because the moon would come between Earth and the sun more often.

B. Less frequent, because the moon would be moving faster.

C. More frequent, because the moon's shadow would move twice as fast across Earth's surface.

D. Less frequent, because the moon would come between Earth and the sun less often.

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

Astudent is looking through a microscope at some cells of an onion root tip. many of these cells are undergoing division since the root tip grows quickly and requires more cells. which cell most recently underwent metaphase? w x y z

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement