Environmental Science 4.09 Mid Term Survey

1. List three natural resources we have studied this semester.

2. What is the difference between renewable and nonrenewable resources?

3. Why is a perpetual resource considered renewable?

4. Briefly describe 3 ways you and your family could minimize solid waste. (Remember: recycle,

reuse and renew!)

5. What accounts for most of the solid waste in a landfill? (See 4.06 Case Study)

The hershey and chase experiments involved the preparation of two different types of radioactively labeled phage. which of the following best explains why two preparations were required? a. the bacteriophage used in the experiments was a t2 phage. b. it was necessary that each of the two phage components, dna and protein, be identifiable upon recovery at the end of the experiment. c. each scientist had his own method for labeling phage, so each conducted the same experiment using a different isotope. d. establishing the identity of the genetic material required observation of two phage generations.