Answer: It's an EXPERIMENT
Explanation: Experiment is done when we apply anything to a samples or conditions in other to study another sample or conditions.
Observation is done when, we study samples or conditions in it's natural way, without application of anything that may alter it's result.
Because the researcher has applied fertilizer to one side and did not apply to the other side, that means he has performed an experiment. Since he wasn't observing the two sample in it's natural way without any external application.
Judicial review is a process under which excecutive or legislative actions are subject to review by the judiciary.
Answer:
Population used to be centered differently
Explanation:
The East Coast was where the US began and the rust belt was where the US became wealthy. So, the majority of the district banks reflect that history.
Answer: The Moon has a diameter of 2,158.8 miles. It takes four Moons to equal the diameter of the Earth. The moon is 6,790 miles around at its middle. If you could drive a car around the moon at 75 miles per hour, it would take you about three and a half days to make the trip.
Explanation: can I get brainliest