The universe is defined as all the space, matter, and all forms of energy existing together. The formation of the universe is explained by the Big Bang theory.
The statements about the universe that are correct:
- dark matter exists
- the invisible matter must be influencing the rotation of galaxies
- galaxies spin faster than they should be based on visible matter
Scientists and advancements in research show that dark matter exists in the universe, but scientists are not sure about the composition of dark matter.
The spiral galaxies generally rotate at a speed proportional to the amount of visible matter. Recent research has shown that super spirals are rotating must faster than the predicted visible mass and have a high ratio of dark matter.
Thus, statements 1, 3, and 4 are correct.
To know more about the universe, refer to the following link:
brainly.com/question/9724831
Sinoatrial node i am 100 percent sure thats the correct answer
Ecosytems are <span>a biological community of interacting organisms and their physical environment, therefor if a new species is introduced the perfect balance of prey and predators can be disrupted leaving lack of food supply for the native species.</span>
