The____________ produced by photosynthesis was toxic to many early organisms. a.Carbon b.Carbon Dioxide c.Hydrogen d.Oxygen

Answer

Oxygen

Q:What is photosynthesis? A:Photosynthesis is the process in which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.
Q:What is produced during photosynthesis? A:Oxygen is produced during photosynthesis.
Q:Why was the oxygen produced by photosynthesis toxic to many early organisms? A:The oxygen produced by photosynthesis was toxic to many early organisms because they did not have the means to break down or use oxygen like organisms do today.