Formaldehyde is a volatile organic compound that is involved in the formation of photochemical smog in heavy metropolitan areas. What is most likely a direct source of formaldehyde in the atmosphere?

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 type of neuroglia is found outside of the brain?

Name the part of the the brain labeled "e".