Question

select the word that means grinding into dust. to protect elephants from being killed for their tusks, many governments have signed international agreements proscribing the sale of elephant ivory. people caught importing or exporting ivory or poaching the elephants are arrested, and the illegally traded ivory is destroyed with a rock crusher. by pulverizing the ivory, the government renders it worthless, keeps it out of the hands of customers, and makes the point that trading in illegal ivory isnt tolerated.

Explanation:

The text mentions "By pulverizing the ivory" and states that this means grinding it into dust as the ivory is destroyed with a rock - crusher to make it worthless. The word "pulverizing" means reducing something to fine particles or powder, which is equivalent to grinding into dust.

Answer:

pulverizing