As a precursor to astronomy, ancient civilizations used the predictable movements of planets as methods for what?

They noticed patterns in the sun's rising and setting and in the shape and position of the moon on any given evening. They often built shrines or henges that told them of key astrological moments such as the winter and summer solstices or the spring and fall equinoxes. This helped them to know when to plant crops after frosts and when to harvest them before winter descended.

B

Explanation:

Boron has 5 protons.