Sudan and the democratic republic of Congo
Answer:
Loess
Explanation:
Loess is a sedimentary deposit that covers around 10% of Earth's land.
By elevation of the atmosphere
Answer:
otayy, leo.
the oldest mountain, we can say its been around for a while now so it would make sense as to why it would be leo. since its been around the earth has changed and moved shifting plates etc, this takes time. making leos answer make more sense. again im not sure abt this response but this answer (leo) should be right