Abowl-shaped depression at the head of a glacial valley is a. a horn b. an arête c. a cirque d. a trough

The right option is; C. a cirque

A bowl-shaped depression at the head of a glacial valley is a cirque.

A cirque, (also called corrie) is a bowl shaped basin that has precipitous walls at the head of a glacial valley. Cirque is usually formed by erosion under the bergschrund (series of fissure) of a glacier. The section of a cirque that is cupped shaped is usually steep, while the concave shape is opened on the downhill side. Examples of cirques and their location include; Circo de Gredos in Spain, and Chandra Taal in India.

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves