do you see any contradiction in the fact that americans share a common set of ideals and yet often find themselves on opposite sides when it comes to party politics

Which of the following is an example of negative reinforcement? a.marty knocks over his mother's prize fern so she gives him a time out. b.gwen mows the lawn and her dad takes her out for ice cream. c.tara takes an aspirin, and her headache begins to go away. d. peter comes in late from his lunch and is fired from his job.

How do astronomers measure the amount of dark matter in the universe

What is the effect of mori's introducing japanese terms especially ronin paragraph 6 at the beginning of her essay