Which part of our outer surface is the most susceptible to pathogens: skin or mucous membrane?
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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

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?