What process is involved in over irrigation that results in the reduction of soil fertility? a) water penetrates the deep soil layers and dissolves the salt present there. b) salt accumulates near the surface of the soil. c) salt is drawn towards the surface with the water through evaporation. d) all of the above.

The us council on environmental quality, the world wildlife fund of the united states, the ecological society of america, the smithsonian institution, and the international union for the conservation of nature have proposed four principles of wildlife conservation. which of the following does not apply to wildlife conservation? a) continuous monitoring, analysis, and assessment b) ecosystem maintenance that includes wildlife c) a plan encompassing entire communities of organisms and all renewable resources d) a continued interest in harvesting populations for sport