The diagram above suggests that a. the earth has not changed over geologic time. b. geologic time periods occur in repeating cycles. c. the earth has changed over geologic time. d. geologic eras occur in repeating cycles.

Why does a red shoe appear red in daylight

In which of these cases are the two wave points considered to be in phase with each other?

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?