Boating is mosly done in coastal regions. (unless you are rich and have a coast sized pool, that is different.)
The right option is; a. soil degradation
Soil degradation most plausibly accounts for the reduction in corn yield.
Soil degradation is an environmental problem in which the condition or quality of soil is reduced due to its improper use usually for agricultural or industrial purposes. Soil degradation can reduce the physical, chemical and biological quality of soil. Soil degradation results in loss of organic matter, soil contamination, fertility decline, and soil acidity or alkalinity which can greatly affect agricultural productivity.
D.importance of agriculture
In geography, regions are areas that are broadly divided by physical characteristics(physical<span> geography), human impact </span>characteristics<span> (human geography), and the interaction of humanity and the environment (environmental geography).</span>
