This is an image of inter-tropical convergence zone.
The phenomenology of the thunderstorms and the winds toward the equator.
This shows different down slopes of mountains or lands due to weathering.
Rwanda is like in 75 miles from the equator. it is near the equator, they receive a heavy rain daily during the afternoon due to hug evaporation. The rainy season make their agriculture manageable. There exist types of clays that people use for bricks to build houses. Due to many climate changes, Rwanda has some limited landscapes because of not enough water, some mass wasting areas and and some turning transport limited.
Due to weathering, we can see on this image how land forms drainage between between a vegetarian land.
Variations in solar radiation, mountain-building, continental drift and changes in greenhouse gas concentrations, and minerals that we use in our daily life, it's easier to understand our weather changes.