How the respiratory system works to adjust blood ph?

Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because

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