Get premium membership and access revision papers with marking schemes, video lessons and live classes.

Processing. Please wait.

i) Differentiate between denudation and mass wasting.
ii) Explain two reasons why chemical weathering is dominant in humid tropics.

Answer Text:
i) - Denudation refers to all external land forming process such as weathering, glaciations action of water, wind and wave action which
modifies the original landscape. While mass wasting is the down slope movement of weathered materials under influence of gravity.
ii) - High temperature accompanied by moisture found in the area accelerate chemical reaction thus speeding decaying of rocks.
- High rainfall and combines with carbon dioxide to form carbonic acid which make some
minerals in rocks soluble.
- Secretion of animals in such areas also contribute in dissolving of certain types of rocks.