Answer:
A. Crests and troughs that remain stationary although the air forms them is moving rapidly.
Explanation:
The standing waves are a phenomenon that is a result of the interference of two wavelengths. The air over the mountain ranges is of high intensity as a result of temperature elevation. Fast movements of air currents produce scrambled ripples, as a result, the pattern of air crest and troughs remains static.
Simple, we weren't around during that time, so we made theories and conclusions to when life evolved on earth.
Answer:
yes the triangle are similar
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