There are many different types of living cells on earth which of these characteristics do all living cells have in common. A. Require water for survival B. require silicon for structural support C. Require oxygen for respiration D. Require sunlight for photosynthesis.

They all require oxygen for respiration. All cells must go through cellular respiration.

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.