Question

overfarming and overgrazing farmlands have been a major influence in which destructive process? desertification income distribution deforestation reforestation

Explanation:

Overfarming and overgrazing remove vegetation cover, leaving soil exposed. This leads to soil degradation. Desertification is the process where fertile land becomes desert, often due to such human - induced soil degradation. Income distribution is about how income is spread in a population (not related here). Deforestation is loss of forests (not directly overfarming/overgrazing on farmlands). Reforestation is replanting forests (opposite of destructive).

Answer:

desertification