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Activity 1.3.2 standard and metric measuring pltw

What happens when two galaxies approach each other? a. they form a black hole. b. they merge because of the strong gravitational pull they exert on each other. c. they shred each other into smaller galaxies. d. they form a supernova. e. they repel each other away because of their strong gravitational pull.

Astitch in time saves nine. a penny saved is a penny earned. these sentences similar in meaning opposite in meaning neither the same nor the opposite