video1.0<iframe src="https://www.loom.com/embed/c580ea4f916347f8b505bb3590638a72" frameborder="0" width="960" height="720" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>720960Loomhttps://www.loom.com720960https://cdn.loom.com/sessions/thumbnails/c580ea4f916347f8b505bb3590638a72-00001.jpg142p: The mesosphere is the layer of Earth’s atmosphere between 50 kilometers and 85 kilometers above Earth’s surface. At a distance of 50 kilometers from Earth’s surface, the temperature in the mesosphere is −5° Celsius, and at a distance of 80 kilometers from Earth’s surface, the temperature in the mesosphere is −80° Celsius. For every additional 10 kilometers from Earth’s surface, the temperature in the mesosphere decreases by k° Celsius, where k is a constant. What is the value of k ? a: ; ; ; ;