Intellectual Olympiad in Ecology - 2026 ongoing
1000 ₸
Subject: Ecology Level: XI (I is easiest, XII is hardest)
Category: student
Question language: English
Questions: 15
Example question: A lake receives acidic drainage from a mine. Which change would most directly threaten its fish populations? Increased turbidity caused by suspended clay, Reduced concentration of dissolved oxygen caused by stronger winds, Lowered pH that disrupts gill function and reproduction, Greater availability of nitrate for aquatic plants