Câu 3: Tại sao phải bảo vệ và khai thác hợp lí tài nguyên khoáng sản? đề xuất một số biện pháp bảo vệ? Câu 4: Trình bày vai trò của lớp không khí đối với trái đất và sản xuất sinh hoạt của con người? Câu 5: Trình bày nguồn gốc xuất phát của các khối khí: nóng ẩm, nóng khô, lạnh ẩm và lạnh khô.

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