Answer:
3.) Pumice
Explanation:
"Pumice is widely used as an abrasive in soaps and cleaners. It is considered one of the softest abrasives on earth."
Answer:
What is the predominant vegetation zone in the northern part of Africa around the Tropic of Cancer?
desert and dry shrub
<em>In the northern part of Africa around the Tropic of Cancer is situated the </em><em>Sahara Desert</em><em> - the largest desert in the world, where the vegetation is formed by grasses and bushes shabby. The vegetation in the oases is maintained by groundwater.</em>
The answer to this question is B. Cold Front