The remora attaches itself to sharks by means of its mouth. it gets free transportation and protection and also the remnants of food material that escapes the shark's mouth. the shark does not benefit and is not harmed in any way by the remora. what kind of interaction do the remora and the shark demonstrate?

Aeukaryotic cell must be from a plant if the cell a) a nucleus b) a nuclear envelope c) cytoplasm d) a cell wall

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 is an example of a decomposer? a. bear b. algae c. grass d. bacteria d bacteria