The answer to this problem is Carbon dioxide is the waste product and it released into the atmosphere by active volcanoes. I hope this helps
Both Namibia and Botswana are mostly covered by the Kalahari Desert, along with few regions of Namibia. According to the geographical statistics, Botswana's seventy percent territory is covered by the Kalahari desert. That makes the option d. Botswana, the country mainly covered by the Kalahari Desert.
The key word here is "awareness" - so the question is, how do we spread awareness about the plight of the refugees?
Here are some ideas:
-writing newspaper articles which include personal stories and possibly interviews
-making news reports showing the everyday life of refugees
-inviting the refugees to speak in a local institution, for example a school.