Joe's boss allows him to leave early while others must stay to clean the store because he offers customers excellent service during his shift. this is an example of which of the following? positive reinforcement negative reinforcement punishment classical conditioning

The use of fertilizer on a large farm would have the largest effect on which of the following? rate of photosynthesis in local plants amount of smog in the lower atmosphere rate of anaerobic respiration in aquatic bacteria extent of eutrophication in nearby water bodies rate of evapotranspiration from surrounding area