D.) (If you're infected, a blood test may show a rising level of antibodies to the West Nile virus.)
The second one changes in the amount of atmospheric gases because it think it might effect everyone including plants and animals because will all breath the same air rather than a mountain building it might affect the animals that like there.
Groundwater is the largest available source of freshwater.
1.) the most closely related above are the dolphin and the fish. this is because they are in the same kingdom, phylum, class, order, and family. because the specific names of the organisms are not listed, that is as specific as i can get.
2.) the wolf is the least related to all of the rest of them because it is in a different class. class- mammal, bird, fish, insect, reptile, amphibian, etc.