No matter what the technology is, but generally the more crops we produce, the lower the prices are. However we can observe from a few years kind of a new phenomenon: there's a bigger demand for some of the food products, so we're producing more but the prices are getting higher too.
Answer:
the rise of agriculture and trade allowed people to have surplus food and economic stability.
Sahara desert, camels were best suited for this trail because of their ability to store water in their humps.
Answer:
The best term that describes Theodore Roosevelt and John Muir is conservationists.
So the answer choice is B.