Which owhich of the following gases is not found in earth s atmosphere?
a. oxygen
c. hydrogen
b. nitrogen
d. all of the above are in the atmosphere f the following is not a major gas of earth's atmosphere?

Technology has affected regional settlement patterns in what ways? choose all that apply. climatic improvement strategies have improved crop productivity. mechanized agricultural methods have improved agricultural productivity. participation in the global economy has increased urbanization. population shifts from urban to rural areas has increased as a result of petroleum production. settlement areas have increased as a result of improved water storage and delivery systems.

Which function is represented by the graph? o f(x) = -[x] + 4of(x) = -|*| – 4f(x) = -x + 4f(x) = -x - 41

According to the theory of continental drift, what was the priginal state of the worlds continents