Each year, pine forests suffer large losses due to pine beetle infestation. these beetles carry a fungus that infects and kills the tree. which, if any, of the following terms is not an accurate term for the role of the beetle?
a. pathogen
b. reservoir
c. vector
d. host
e. all of the above accurately describe the role of the beetle

a. Pathogen

Explanation:

A pathogen organism is the main cause of disease in another organism. In this example, beetles just carry the fungus, which is the real cause of the infection in the pines.  So, beetles are vectors of the fungus. They also can be called "Reservoirs" or "hosts", and the fungus is the pathogen that produces the pine’s death.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.