The source of energy for reactions on the sun is ________
A) nuclear fusion B) hydrogen fuel C) natural gas D) nuclear fission
A
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Oil is a(n) ____.
A. nonrenewable resource because it cannot be formed on human time scales B. renewable resource because it can be renewed through human processes C. inexhaustible resource because it is a form of stored solar energy D. ecosystem service because oil is a valuable commodity E. renewable resource because it can be used to make fertilizers that restore soil fertility
Give examples of features in your life that would be symbolized by points, arcs, and polygons.
What will be an ideal response?
What is the principal difference between craters and calderas?
A) Calderas are much larger depressions created by collapse of the upper portions of the volcano. B) Calderas are associated with cinder cones, while craters are associated with shield volcanoes. C) Craters are created by explosive eruptions, while calderas are not. D) Craters are associated only with fissure eruptions.
The Sun is composed almost entirely of two gases. They are ________ and ________
Fill in the blank(s) with correct word