Carbohydrates provide many things, including:

Carbohydrates are mainly found in plant foods. They also occur in dairy products in the form of a milk sugar called lactose. Foods high in carbohydrates include bread, pasta, beans, potatoes, rice, and cereals. Carbohydrates play several roles in living organisms, including providing energy

Explanation:

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some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

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