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Explanation:
Music and dance, which was central to African life, became sustenance for slaves’ emotional lives in America, especially in their prayer and worship practices. Many cultural elements from colonial America still exists in African-American culture today.
Answer: i don't understand the question
Explanation: can you add the reading or something
Earth can be considered as a closed system, since it only receives sunlight (energy), while the overall mass stays constant, without (almost) any exchange from space. Another example of a closed system is a saucepan or frying pan, on a stove, when its lid is closed.