Acommon way by which virus vaccines are made is to introduce a mutation that makes the virus less virulent (i. e. that reduces the severity of infection) and to expose patients to that mutated virus. which sort of mutation would it be safest to introduce to ensure that the virus cannot easily revert to its original, virulent state?

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 describes a grizzly bear’s habitat?

Find the mass of the cone using the triple beam balance. a. 543.0 g b. 542.0 g c. 504.28 g d. 502.8 g select the best answer from the choices provided a b c d