Hii someone pls help with this, thanks :)

All of the following are part of the biosphere except

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound