Topic: Food Energy and Respiration Subtopic: Making the air moist, warm and clean
How is air processed in nose?
Answer: As the air passes through the nasal cavity. The hair in the nose make the air clean by trapping dust and germs, blood vessel present in the nose make the air warm before it reaches the lungs and the slimy greenish yellow mucus present in the nose make the air moist.
- What are by-products of respiration?
- How are these parts arranged?
- What is root cap?
- Where are pulses felt?
- What is circulatory system?
- Why do not plants require huge amount of raw materials?
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