I have no idea I am sorry someone will help you soon
I'm not posotive but I think the answer is
b. atmosphere
I think the answer to your question is 6.7.
Explanation:
sorry please can jspme one pleasejhe
Answer:
Mt. Everest (elevation of 8848 m), the air pressure is 253 mmHg. The summit of Mt. Everest, the highest elevation on earth, where the pressure averages around 300 mb." As altitude increases, the air becomes thinner, the density of air decreases, and the pressure of the air decreases as wel