Given that the energy plant is to be built on the bank of the river, it will affect the local watershed by contaminating the water flowing in front of it. Option ll is correct.
The Construction of an energy plant on the banks of a river implies a hydro power plant. This means that the plant will harvest the energy of the flowing river to create electricity. A turbine is used to transform the kinetic energy of the moving water into the mechanical energy needed for electricity. The problem with this idea is the pollution.
The process of generating electricity from the kinetic energy of the water comes at a cost. This cost is in the form of waste that is produced. This waste is often very toxic to life. Some energy plants of this kind produce a great amount of waste, which can result difficult to dispose of and thus is often dumped back into the river, contaminating the river that flows after the power plant.
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