As I said in your other post/question on the same topic, you have to rephrase your question in order for us to help you. =)
Hey there,
<span>CUBA has the largest reserves of OIL and NATURAL GAS of any island in the Caribbean.
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Hope this helps :))
~Top
They are formed by subduction
Respiration of carbon dioxide by plant roots can lead to the formation of carbonic acid which can chemically attack rocks and sediments and help to turn them into soils. There are a whole range of weathering processes at work near the surface of the soil, acting together to break down rocks and minerals to form soil.
