It is 35°C at sea level. The environmental lapse rate between sea level and 2100 meters is 6.85 °C/1000m. The environmental lapse rate between 2100 meters and 3500 meters is 11°C/1000m. The normal lapse rate exists above 3500 meters. What will the temperature be at 9000 meters?

the first phase of the government’s plan for settlement was building the transcontinental railroad. the railroad provided a way to bring settlers and manufactured goods west and ship their agricultural and mining produce east. the transcontinental railroad was an essential artery for rapid development of the frontier.

the second phase of the government’s plan was a liberal land distribution policy that made it possible for many people to homestead. with these two key elements—transportation and cheap land—the government rapidly achieved its goal of persuading people to move west, settle on farms, and push back the frontier.

your answer is 20. hope this !