Theory

Practice Questions

1. Ecology and decomposers

Difficulty: easy

2
2. Decomposers

Difficulty: easy

1
3. Large dams

Difficulty: easy

1
4. Trophic level

Difficulty: medium

3
5. Biodegradable and non-biodegradable wastes

Difficulty: medium

3
6. Pesticides

Difficulty: medium

2
7. Types of wastes

Difficulty: hard

5
8. Harmful effects on enviroment

Difficulty: hard

5
9. Biological magnification

Difficulty: hard

5

Teacher manual