The small white insects (cochineal) that live on the beaver tail cactus in the arroyo seco suck sap and water from the cactus without providing anything for the cactus in return. this is an example of

Aclient with legionnaires' disease is prescribed azithromycin, 500 mg on the first day, and then 250 mg on days 2 through 5. after completing the therapy, how many grams of the drug has the client received? enter the number only.

An easy way to calculate the amount of energy available at each level is to what?

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.