Answer:
Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering. Rocks in tropical regions exposed to abundant rainfall and hot temperatures weather much faster than similar rocks residing in cold, dry regions.
The key factor in the rate of chemical weathering of rock is its size, chemical composition as well as area of exposure to wind.
Chemical weathering of a rock is define as the change in the composition of the rocks due to the interaction of water with different minerals to produce different type of chemical reactions.
Rate of chemical weathering will depend on the chemical composition of the rock as well as surface area which is available to get reacted. Chemical weathering mainly depends on temperature, pressure and rainfall so it also affects by the exposure of rocks to the winds.
So, all of the above is the key factor of chemical weathering.
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