well some word like dog-food and cat-fish
are named by their looks, feel, or even what they are used for.
I think the correct answers from the choices listed above are overgrazing and control river currents, respectively.
<span>Desertification in the region is due to large petroleum deposits.
</span><span> The intertropical convergence zone control river currents.
Hope this answers the question. Have a nice day. </span>
The answer is D. All of the above