Which one of the following type of resource is iron-ore?

• Renewable
• Biotic
• Flow
• Non-renewable

Under which of the following type of resource can tidal energy be put?

• Replenishable

• Human-made

• Abiotic

• Non-recyclable

Which one of the following is the main cause of land degradation in Punjab?

• Intensive cultivation
• Deforestation
• Over-irrigation

• Overgrazing

In which one of the following states is terrace cultivation practised?

• Punjab

• Plains of Uttar Pradesh
• Haryana
• Uttarakhand