生态学 - 2026 进行中

科目: 生态学
级别: VII (I级最简单，XII级最难)
类别: 大学生
试题语言: English
题数: 15
问题示例: During summer, a deep lake develops a warm, oxygen-rich upper layer and a cold, oxygen-poor deep layer. What physical process most directly produces this separation? River discharge, Wave erosion, Thermal stratification, Groundwater infiltration