D) all of these B. Fill in the blanks.
1. All the things in your surroundigs make up your
2. When air or water becomes dirty, it is said to be.
3.
from vehicles and factories pollutes the air.
4.
clean the air
and
pollute the water.
5. Wastes from
C. Answer the following questions.
1. How do we depend on the environment?​

In a series of experiments, hershey and chase radioactively labeled dna and protein in viruses and then used labeled viruses to infect bacteria. hershey and chase's experiments definitively showed that a. dna and not protein is the genetic material. b. dna and protein work together as a cell's genetic material. c. protein and not dna is the genetic material. d. neither dna nor protein act as a cell's genetic material