The impression gives a reproduction of tissue. a reproduction is obtained by pouring dental stone or other suitable material into the impression and allowing it to harden.

Liquid water turns into water vapor at which step in the water cycle

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

What is the following best defines climate?