Answer:
They are deep impact craters.
Step-by-step explanation:
The dark patches on the moon's surface are the deep impact craters.
These patches on the moon are believed to products of impact cratering.
- They are called Marinas.
- During the earth time when the moon was formed, the was significant number of cratering activities as a result meteoritic and asteroid collision.
- These events sculpted the face of the moon significantly.