Question

agricultural productivity will be lost due to environmental degradation, why?

Answer 1

for this you need to understand what is agriculture and environmental degradation

agriculture~Agriculture describes the practice of growing crops or raising animals.

environmental degradation~Environmental degradation is the deterioration of the environment through depletion of resources such as air, water and soil; the destruction of ecosystems; habitat destruction; the extinction of wildlife; and pollution. ... When natural habitats are destroyed or natural resources are depleted, the environment is degraded.

from the above information we can conclude that~

agricultural productivity will be lost due to environmental degradation because growing of crops and raising of animals requires a good biodiversity,which is not possible if environmental degradation comes into action.