Answer:
the right awnser is 3 b and 1 w vote brainliest this is right.
Explanation:
Potassium is just below the sodium in periodic table in s group !
so the valence electron of sodium and potassium is same and that is 1 !
Answer:
c. Biosphere
Explanation:
The biosphere, also known as the ecosphere, is the worldwide sum of all ecosystems. It contains all living things above and below the surface of the Earth.
I think it’s A it’s probably wrong or not
