D. Greenhouse gas feddback
I'm not for sure but I believe this is the answer sorry if I get it wrong in advance
Answer:
it is the only environment capible of sustaining life.
Explanation:
it has oxygen, water, and its the right temp. those are all needed for life, with them we would not survive.
Answer:
What exactly is your question?
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.
