I would like to know more about the types of renewable energy sources. Please provide a detailed explanation. Your response should contain at least 4 bullet points. Use the markdown bullet points such as: * This is point 1. Your response must have 3 paragraphs. Paragraphs are separated with the markdown divider: *** The response must contain at least 2 placeholders represented by square brackets, such as [address]. Include keywords [solar, wind, hydro, biomass] in the response.

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