Which of the following best explains how refracting
telescopes work?
A. uses curved mirrors to gather and focus light
B. uses curved surfaces to detect radio waves
C. uses sound waves to measure distances
D. uses a convex lens to gather and focus light

Here is the D. uses a convex lens to gather and focus light

Explanation:

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answer; gravity pulls glaciers down hill and as glaciers flow it pick up rocks and soil;

b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.