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Bot GPT 4-o mini The three correct answers that provide evidence of universe expansion supporting the Big Bang Theory are:
1. **Galaxies are moving away from each other.** - This is a key observation known as redshift, which indicates that the universe is expanding.
2. **An enormous amount of weak cosmic background radiation has been detected in the universe.** - This Cosmic Microwave Background (CMB) radiation is a remnant from the early stages of the universe and supports the Big Bang Theory.
3. **The temperature of Cosmic Microwave Background radiation varies widely from one part of the universe to another.** - This variation supports the theory that the universe was once in a hot, dense state and has since cooled as it expanded.
The incorrect options are:
- The universe is undergoing a cycle of contraction and expansion. (This is not a consensus view in cosmology.)
- The temperature of the universe is increasing. (The overall temperature of the universe is decreasing as it expands.)
- The temperature of the universe is decreasing. (Although it is actually true that it is decreasing, it does not directly relate to the evidence supporting the expansion as the CMB does.)