OpenOlympiad
…
← Science

Our Environment (Air, Water, Garbage)

Air to breathe, water to drink, waste to manage. Earth 101. 🌍

📖 Concepts

1Air — the invisible ocean→2Water — three states and the water cycle→3Water scarcity and conservation→4Water pollution and treatment→5Air pollution and its effects→6Biodegradable vs non-biodegradable waste→7The 3 R's and composting→8Greenhouse effect and global warming→

🎯 Practice questions

Start with basic, then try regular and hard when you're ready.

🌱basic
40
questions
⚡regular
20
questions
🔥hard
20
questions