Drag each tile to the correct location on the image. Place the labels to describe the role of the lungs and blood in transporting oxygen and carbon dioxide in the body.

What are some characteristics of a free enterprise economy?

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?