In comparison, the group 1 elements, including hydrogen (H), lithium (Li), and sodium(Na), all have one electron in their outermost shells. This means that they can achieve a stable configuration and a filled outer shell by donating or losing an electron.
A membrane that lets only some things pass through it.
Answer:
B
Explanation:
I hope this helps. Sorry if i'm wrong.
The common difference between them is that they are all bacteria.
Hope it’s helps
