Collisions between galaxies are thought to:

What is the difference between electrically neutral objects and electrically charged objects

Which describes an image that can be produced by a concave lens? the image is real and smaller than the object. the image is virtual and larger than the object. the image is virtual and smaller than the object. the image is real and larger than the object.

Which surface feature of the moon is characterized by mountainous areas? terrae craters maria regolith