Cây cối đang lớn nhanh hơn
ột nghiên cứu tại Mỹ cho thấy thực vật đang sinh trưởng nhanh hơn so với hai thế kỷ trước do nhiệt độ địa cầu tăng lên.Tình trạng ấm lên toàn cầu khiến cây cối lớn nhanh hơn so với hai thế kỷ trước. Ảnh: flickr.com.
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