Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: Which of these renewable resources results in an increase in pollution when used to produce energy?
biomass
Biomass (when produced from crops grown for energy) can result in an increase in pollution due to the use of fertilizers, pestic