Last week, the citizens for a greener america sent a formal letter to tee time golf resort requesting that the private club measure its carbon footprint and thusly publicly disclose the amount of fertilizer and other carbon-emitting substances it's using on its two award-winning golf courses. citizens for a greener america is an example of

a watchdog group

Explanation:

solution

we know here that Greener America citizen sent letter to Tee Time Golf Resort for request them private club measure it's carbon footprint & the thusly publicly disclosing amount of fertilizer

and carbon emitting substance

here use 2  award winning golf course

so here we can say that it is a example of a watchdog group

because

Watchdog group inform to public about on going  institutions and society

and mainly when significant portion of the public  demand change in response

and watchdog group is like a protector or guardian

so here correct fill up is  a watchdog group

answer; the basal forebrain;

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.