An object so dense that even light can be not even light can not escape its gravity

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

Identify the electromagnets with poles that are reversed from the electromagnet shown above