Which of the following is true of alloys? A. They’re liquid solutions
B. They must contain a metal
C. They must be held together by chemical bonds
D. They can only be composed of metals

Which activity describes an application of topographic maps? check all that apply. recreation, such as camping and hiking engineering, such as the construction of roads and buildings science, such as mapping stars in the sky business, such as analyzing population centers science, such as analyzing surface features