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The two correct answers regarding how solar weather affects Earth's magnetosphere are:
1. **It causes geomagnetic storms.**
2. **It generates auroras.**
Solar wind and solar weather phenomena like coronal mass ejections interact with the magnetosphere, leading to geomagnetic storms and the generation of auroras. While solar wind itself is a continuous stream of charged particles from the Sun, it is the interaction of these particles during solar storms that notably affects the magnetosphere.