Answer:
About an year.
Explanation:
If we could collect all of the energy of the sun that came to earth in one hour , the energy is enough for all of humanity's energy needs for one year. The humans used about 575 quadrillion Btu whereas each hour 430 quintillion Joules of energy is received from the sun by the Earth which is a huge quantity so by seeing the data we can conclude that about one hour of sun's energy is enough for about about one year for the whole world.
I’m not sure but it might be B.
Alfred wegner is considered as the father of tectonic theory
Answer:
B - sub-Sahara Africa
Explanation:
this region is already very dry - there has been over grazing of animals - deforestation that speeds up desertfication
