ALL Grade 8 preIB students
preIB-1 Dec. 8, 2009
preIB-2 Dec. 11, 2009
preIB-3 Dec. 10, 2009
Note: Don't forget to write your name and class in your email. Submit your assignment at BiologyCH_09@yahoo.com.
1. Define respiration. Explain its stages.
2. How does respiration in humans differ from a fish?
3. Why do the rate of breathing increase if a person is in an overcrowded area?
4. What are the effects of smoking?