How are geothermal and hydroelectric energy similar?

Both are produced from steam and both are renewable source of energy.

Hydroelectric energy is produced by converting the kinetic energy of water into electric energy. It is a renewable source of energy and the water can be used again.

Geothermal energy is the thermal energy that is obtained from the earth. This thermal energy can be utilized to produce renewable energy. By passing a water stream and letting it to evaporate and then utilizing the steam, electricity can be generated.  

tge answer is a. the world in spatial terms

since there isn't any suggested answers i will give you the reason and hopefully you can figure it

south africa, or rather all of africa, has not been in the location in which it is nowadays throughout the geological past. after the super-continent pangaea started to break apart, gondwanaland, in which was africa, moved further south, and parts of it came to be very close to the south pole. because the climate in this part of the world is very cold due to the very dispersed sun rays in there, what is now south africa, started to freeze, and the conditions were right for the formation of glaciers. the glaciers existed up until the period when gondwanaland started to break apart and what is now africa started to move towards north, sp it warmed up and the glaciers melted.