What do all living organisms have in common?A. They all reproduce asexually. B.They all perform photosynthesis. C.They all release oxygen into the Earth's atmosphere. D.They are all made of one or more cells.

D

Explanation:

Only some organisms reproduce asexually, only plants perform photosynthesis, and most creatures consume oxygen and release carbon dioxide. D is the correct answer both by process of elimination and because the simplest life form is the single celled organism, which still has one cell. All complex life is made out of many many many cells.

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!