While kelp absorbs blue and red wavelengths preferentially, it doesn't mean that green wavelengths aren't absorbed elsewhere.For example, carotenoids like algae and bacteria and fungi absorb blue-green light and there are plenty of these types of organisms on the earth. Carotenoids familiarly present also in vegetables like tomatoes.
Explanation: Oxygen has 8 electrons.In the first level it has 2 because its the maximum number of electrons that can be held in the first shell or level