Name 4 morphological and 2 behavioral traits that can distinguish between a seal and a sea lion.

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 does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.