Động vật nhỏ dần vì biến đổi khí hậu
ích thước cơ thể một giống cừu hoang ở Scotland giảm dần theo thời gian do tình trạng ấm lên toàn cầu.Những con cừu Soay trên đảo Hirta. Ảnh: BBC.Giới chuyên gia về tiến hóa từng dự đoán rằng kích thước của cừu hoang sẽ ngày càng tăng vì chỉ những con to và khỏe mới có cơ hội sống sót, trưởng thành và sinh sản. Nhưng trong một nghiên cứu gần đây, các nhà khoa học của Đại học Imperial (Anh) phát hiện ra rằng dự đoán đó có thể không trở thành hiện thực bởi sự can thiệp của môi trường.
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