1. Who discovered the X-ray?
wilhelm conrad roentgen

Motivation cannot be developed with practice; a person either possesses it or they do not.

In a ball-and-stick molecular model, what do the sticks represent?

When an experimenter draws a conclusion that he assumes will apply to all situations set up similarly to his test situation, even though he cannot possibly have examined all possible test scenarios, the experimenter is using deductive reasoning inductive reasoning abductive reasoning subjective reasoning