What Are the Three Primary Types of Water Movements?

Answer Water flows in three ways that are especially important to know when keeping an aquarium. Water movements, including laminar flow, turbulence and surge movement, help to move food, oxygen and waste... Read More »

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The Three Primary Types of Volcanoes?

Volcanoes -- openings in the earth's crust that allow magma and subterranean gas to reach the surface -- are found throughout the world. Most volcanoes lie on or near rifts in the earth's tectonic ... Read More »

What Are the Four Different Types of Social Movements?

Social movements attempt to effect societal change through the organization of social movement organizations -- large groups of like-minded people that promote the desired change. Sociologist Willi... Read More »

What Types of Articulations & Movements Are Occurring When You Sit Down & Stand Up?

Articulation, when it refers to anatomy, is simply the movement of two bones at a joint. However the muscles and tendons, which are anchored to the bones, also pull and tug so that the bones move a... Read More »

The air force installation emergency management program has three primary missions the first mission is to save lives what is another primary mission?