The primary source of fuel in south america is petroleum.
Geothermal heat- to provide energy for process like subduction, melting and metamorphism (to drive plate tectonics)
solar energy- for processes like erosion, weathering and transport
Answer:
Solar systems do not expand despite existing in an expanding universe because of the binding force of gravity. In fact, even galaxies have enough gravity to withstand expansion.
<span>The correct answer is : C.
Botswana.</span>
Botswana is a topographically flat country wherein 70
percent of its territory is the Kalahari Desert. Because Botswana is bordered
by South Africa to the south and southeast area of its territory and by Namibia
to the west and north territory, minimal land areas of both countries are included
in the 900,000 square kilometer land area of Kalahari Desert.
Kalahari Desert also encroached on some parts of Zambia but
no part of Mozambique.
