Https://www3.epa.gov/climatechange/kids/impacts/effects/ecosystems.html
this link might help you
Sorry to take up a answer but the picture is not in the correct format for brainly!!! Upload again so I can help.
Geographical variation refers to differences among populations in genetically based traits across the natural geographic range of a species. ... In the simplest case, we divide these factors into purely genetic versus environmental components to tease apart their relative contributions to observed phenotypic variation.
For your answer, I am sure your blank is "analyze". This is because you must analyze or "look over" your data that has been collected.