Answer:
Pioneers moved west through a desire to make their fortune through the farming of previously unfarmed lands – too many people it was regarded as an extremely exciting opportunity, a chance of a new life. -The attraction of cattle farming encouraged people to move out west.
Low pressure!
It tends to go from high to low in air pressure! (: If you didn't know - atmospheric pressure can be determined by something called a mercurial barometer! I hope all is well, and you pass! Good luck, rockstar! (:
Let me know if you have any questions, or any comments! (:
25,000 = 2.5 x 10^4
250 = 2.5 x 10^2
0.025 = 2.5 x 10^-2
0.00025 = 2.5 x 10^-4 :D