VII. ANSWER THE FOLLOWING SHORTLY:
[5x3=15]
1. Do plants require nitrogen? Why?
2. List any three uses of magnets?
3. Differentiate between conductors and insulators
4. Animals that hibernate eat a lot before hibernating. Why?
5.Do all aquatic animals breathe oxygen dissolved in water?
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Answer:
No, not all aquatic mammals breathe oxygen dissolved in the water. Some aquatic animals such as dolphins come to the surface of the water to breathe the oxygen present in the air. Only those aquatic animals breathe through the oxygen dissolved in water which have gills modified for gaseous exchange
Explanation:
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