How would you describe the wavelengths of incoming solar radiation compared to the wavelengths of reradiated heat?

The re-radiated light from  the earth's surface has a higher wavelength (and lower frequency) compared to the light hitting the earth’s surface from the sun. This is because the re-radiated light is usually in the infrared spectrum (which has lower energy) while that striking the earth is majorly visible  and UV light (which has higher energy in comparison).

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.