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You will find the information you need here. :3 Good luck!
(Says I have to cite my sources so here goes: I just copy/pasted your question into Google lol)
The slave trade ended in 1807.
Answer:
Human activity is the main cause of climate change. People burn fossil fuels and convert land from forests to agriculture. ... Burning fossil fuels produces carbon dioxide, a greenhouse gas. It is called a greenhouse gas because it produces a “greenhouse effect
The answer is b
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