Quizlet is a great flashcard site that helps you create your own flashcards, and provides you with some great ready-made flashcards as well. As an ESL teacher, I find it to be very useful, especially for students who are not native speakers and do not have anybody at home to help them with their vocabulary.
The atmosphere, the ocean, and the terrestrial biosphere. Carbon can be found in the earths oceanic and continental crust in different types of stones as well as in the soil from the decay of organic matter.
Soil carbon is the generic name for carbon held within the soil, primarily in association with its organic content.Soil carbon is the largest terrestrial pool of carbon, containing 2,200 gigatonnes (Gt) of it. Humans increasingly influence the size of this pool.Soil carbon plays a key role in the carbon cycle, and thus it is important in global climate models.oil carbon plays a key role in the carbon cycle, and thus it is important in global climate models.