Answer:
Mid ocean ridge are where new crustal material is forced to the surface. The new crustal material is pushed apart forming two different plates moving in two different directions. An ocean trench is where old crustal material is pushed under another plate where it is melted and turned into magma.
The African continent isn't suffering from the environmental challenge "reforestation", since most of the continent hasn't suffered deforestation.
Moral altruism
they helped informed only by ethical consideration regardless of any rivalry between the teams. Moral altruism is the highest calling in altruism(helping others selflessly) the team did not consider that if they failed to provide shelter to the other team it would get some advantage over it.
Natural resources made people be able to live their life and it all had to do with their geography
