The Rocky Mountains formed 80 million to 55 million years ago during the Laramide orogeny, in which a number of plates began sliding underneath the North American plate. ... Since then, further tectonic activity and erosion by glaciers have sculpted the Rockies into dramatic peaks and valleys.
Most of the present physiographic regions of the Great Plains are a result of erosion in the last five million years. Widespread uplift to the west and in the Black Hills caused rivers draining these highlands to erode the landscape once again and the Great Plains were carved up.
Explanation:
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Answer:
Different types of cells have <em><u>different shape-shifting capabilities</u></em>, depending on the specific function of that cell in the organism. Three general factors determine cell shape: the state of the cytoskeleton, the amount of water that is pumped into a cell, and the state of the cell wall.
Explanation:
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A. Heat resulting from respiration
The food an organism eats is used for maintenance and growth; however, most of it is lost as heat to the surrounding and not transferred to the next level. <span />
The answer is Ne. All of the other answers are either solids or liquids. Kr is a gas and so is Ne.
