Answer:
The four main ways are freeze-thaw, onion skin (exfoliation), chemical and biological weathering.
Explanation:
It should be oxygen because plants take in carbon dioxide, sunlight, and water and get rid of oxygen, energy, and water. (see pic)
Answer:
If you measure by edge of the Sun's magnetic fields, the end is the heliosphere. If you judge by the stopping point of Sun's gravitational influence, the solar system would end at the Oort Cloud.
