In order to keep all other things the same and isolate the effects of one particular variable in the biology experiment, Kate will want to do which of the following? Check all that apply.

Offer the same type of food to the rats in each trial.
Avoid drawing conclusions after one trial.
Make sure all tested rats are the same age.

Make sure all tested rats are the same age.

Offer the same type of food to the rats in each trial.

Explanation:

In order to be able to isolate the effects of one particular variable during a research, all the subjects in each trial must be subjected to the same conditions except the variable whose effects is being isolated.

Hence, Kate must offer the same type of food to the rats in each trial as well as make sure that all tested rats are the same age.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.

it's c.us forest service