Intellectual Olympiad in Ecology - 2026 ongoing

Subject: Ecology
Level: V
Category: student
Quiz questions: in Chinese
Example question: 某种群一年内出生40个个体、死亡15个个体，迁入8个个体、迁出13个个体。该种群数量的净变化量是多少？ 增加20个, 增加30个, 减少20个, 减少30个