What type of rock forms when heat or pressure change an existing rock? Question 2 options:

Igneous

Metamorphic

Sedimentary

Soil

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

How is transcription similar to translation in terms of base pairing?

To be or not to be that is da question