Without the sun, life on earth would not exist. there would be no warmth, no plants, no animals, no night and day. to power itself, the sun is constantly generating a nuclear reaction in its core, in which hydrogen nuclei are combined to form helium. this process is known as fusion, and a massive amount of energy. a) absorbs b) divides c) reflects d) releases

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line