Answer: 1. recollapsing universe
4. critical universe
3. coasting universe
2. accelerating universe
Explanation:
The universe is continually growing and galaxies are moving apart relative to one another.
These four models foresee the expansion and possible contraction of the universe.
Recollapsing universe: this model predicts that galaxies will stop growing apart and start getting closer to one another. It predicts that there is enough density to stop the growth of the universe in the future.
Critical universe: the universe has the same density as the critical density. This is the difference between the density the universe requires to stop and that of a universe with too little density to ever stop expanding
.
Coasting universe: has enough density to enable galaxies to keep growing apart
, in essence, less than the critical density.
Accelerating universe: this model explains that the distance of far-off galaxies is growing exponentially from an observer over time.
I think the correct answer from the choices listed above is option 4. I think it is the process of convection that is responsible for the greatest loss of energy from Earth’s surface into space on a clear night. Convection happens when a mass which contains heat energy is in motion. This happens in wind blowing, oceanic currents and other naturally occurring fluid flows.<span />
Answer: A is the correct answer
Explanation: a pull factor is something that attracts people, so moving somewhere because you found a great new school is a pull factor. The other answers are push factors
Colliding boundaries are convergent so the boundary would be convergent.
<span />
