in many areas on earth, the carbon cycle is being influenced by an increase in the amount of fossil fuels…

in many areas on earth, the carbon cycle is being influenced by an increase in the amount of fossil fuels being burned by humans. when fossil fuels are combusted, carbon dioxide is released into the atmosphere. which of the following describes a possible effect that an increase in carbon dioxide in the atmosphere would have on an ecosystem? plant productivity would increase because more carbon dioxide would be available for photosynthesis. animal productivity would increase because more carbon dioxide would be available for cellular respiration. plant productivity would completely stop because plants cannot use carbon dioxide for life processes. all of the organisms would immediately die because carbon dioxide is poisonous to both plants and animals.

in many areas on earth, the carbon cycle is being influenced by an increase in the amount of fossil fuels being burned by humans. when fossil fuels are combusted, carbon dioxide is released into the atmosphere. which of the following describes a possible effect that an increase in carbon dioxide in the atmosphere would have on an ecosystem? plant productivity would increase because more carbon dioxide would be available for photosynthesis. animal productivity would increase because more carbon dioxide would be available for cellular respiration. plant productivity would completely stop because plants cannot use carbon dioxide for life processes. all of the organisms would immediately die because carbon dioxide is poisonous to both plants and animals.

Answer

Brief Explanations:

To solve this, we analyze each option:

  • Option 1: Photosynthesis in plants uses ( \text{CO}_2 ). More ( \text{CO}_2 ) (from increased fossil fuel burning) would provide more raw material for photosynthesis, likely increasing plant productivity. This is consistent with biological principles.
  • Option 2: Animals use ( \text{O}_2 ) for cellular respiration, not ( \text{CO}_2 ). So this is incorrect.
  • Option 3: Plants rely on ( \text{CO}_2 ) for photosynthesis, so saying plant productivity stops is wrong.
  • Option 4: ( \text{CO}_2 ) is not poisonous to plants (they need it) or animals in normal, non - toxic levels. So this is incorrect.

Answer:

A. Plant productivity would increase because more carbon dioxide would be available for photosynthesis.