Answer:
As the tines of the tuning fork vibrate at their own natural frequency, they created sound waves that impinge upon the opening of the resonance tube. These impinging sound waves produced by the tuning fork force air inside of the resonance tube to vibrate at the same frequency.
Answer:
1 hour to ride his motorcycle
Animals don't make Their own food. they instead depend on the food made by plants. hence no need for chloroplasts
