A and P: Describe the pathway of air from the outside environment to the point of exchange with the capillaries. Also briefly explain the mechanisms for breathing.
Biology: Explain how molecular clocks can be used to show evolutionary time and relationships.
Microbiology: Briefly explain how and why bacterial cells would develop spores.
Physics: What is meant by the term intensity when referring to sound waves? What units are used to measure it? What is the threshold level for safety?
E and S: What are two factors that determine the value of a particular mineral or gemstone? How can these things help determine the wealth of a country?
Zoology: Describe the function of 3 of the parts of the earthworm anatomy that we have studied.
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