Answer:
D. Many local traditional crop varieties have become threatened by extinction.
Explanation:
Answer:
Galaxies rotate around their centers with the sections of the galaxy that are farther out from the galaxy's center rotating more slowly than the material closer to the center. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.
Explanation:
If the earth did not rotate on its axis then the atmosphere would only circulate on its poles and the equator in a simple back and forth pattern.
