If the number of photosynthetic organisms on the earth decreased drastically, which would happen as a result?
less water would be available on the earth’s surface.
less solar energy would reach the earth’s atmosphere.
more oxygen gas would be found in the atmosphere.
more carbon dioxide gas would be found in the atmosphere.

 More carbon dioxide gas would be found in the atmosphere.

Plants and other autotrophic organisms conduct a process of photosynthesis in which they acquire carbon dioxide from the atmosphere and water from the soil to produce carbohydrates as a form of food and oxygen in the presence of sunlight. Plants and other autotrophs can be considered as carbon sinks because they use carbon dioxide from the atmosphere to produce their food. In the absence of photosynthetic organisms the abundance of carbon dioxide gas in the atmosphere would increase.

the answer would be b

explanation:

answer; the correct answer is desert plants;