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.
- Why is it better to breathe through nose?
- What is transpiration?
- How does temperature affect rate of transpiration?
- What is wilting?
- What if cough is vigorous?
- How are these parts arranged?