<u>Answer:</u>
<em>Cirques often contain small lakes called </em><u><em>tarn</em></u><em>.
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<u>Explanation:</u>
Cirque is a depression or a valley-like formation developed from the erosion of the glacier. They are formed in the mountain ranges. The slopes are steep and melted ice flows down to the floor.
The floor of a cirque is a bowl-shaped structure. The ice from all the sides from melting glaciers fill in the floor. When the glacier melts and slides the sides of the cirque, the floor converts into a lake. This small lake is called a tarn.
A descending order polynomial is one that lists the power in a descending order.
<h3>What is a Descending order polynomial?</h3>
In mathematics, this class of polynomial are most commonly used when the power of a term decreases for each succeeding term.
Therefore, the descending order polynomial is one that lists the power in a descending order.
Read more about descending order polynomial
<em>brainly.com/question/2403400</em>
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Tectonic plate movement is run by convection of mantle currents.
