if the number of photosynthetic organisms on earth decreased drastically, which would happen as a…

if the number of photosynthetic organisms on earth decreased drastically, which would happen as a result?\nless water would be available on earths surface.\nless solar energy would reach earths atmosphere.\nmore oxygen gas would be found in earths atmosphere.\nmore carbon dioxide gas would be found in earths atmosphere.

if the number of photosynthetic organisms on earth decreased drastically, which would happen as a result?\nless water would be available on earths surface.\nless solar energy would reach earths atmosphere.\nmore oxygen gas would be found in earths atmosphere.\nmore carbon dioxide gas would be found in earths atmosphere.

Answer

Brief Explanations:

Photosynthetic organisms take in carbon dioxide ((CO_2)) and release oxygen ((O_2)) during photosynthesis. If their number decreases drastically, there will be less (CO_2) being consumed. So, more (CO_2) will accumulate in the atmosphere.

  • Water availability on Earth's surface is mainly related to the water cycle (evaporation, condensation, precipitation etc.) and not directly to the number of photosynthetic organisms.
  • The amount of solar energy reaching Earth's atmosphere is determined by factors like the Sun's output, Earth - Sun distance, and the atmosphere's transparency (e.g., presence of aerosols), not by the number of photosynthetic organisms.
  • Since photosynthetic organisms produce oxygen, a decrease in their number would lead to less oxygen production, not more.

Answer:

More carbon dioxide gas would be found in Earth's atmosphere.