The correct answer is D. All I, II and III.
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms’ activities. This chemical energy is stored in molecules of the sugar glucose.
The process of photosynthesis can be summarized by the following chemical equation:
6CO2 + 6H2O + light energy â C6H12O6 + 6O2
In this equation, six molecules of carbon dioxide (CO2) and six molecules of water (H2O) are combined with light energy to produce one molecule of glucose (C6H12O6) and six molecules of oxygen (O2).
The carbon dioxide used in photosynthesis comes from the air. The water used in photosynthesis comes from the soil. The light energy used in photosynthesis comes from the sun.
Photosynthesis is essential for life on Earth. It is the process by which plants produce the oxygen that we breathe. It is also the process by which plants produce the food that we eat.
Without photosynthesis, there would be no life on Earth.
Option A is incorrect because photosynthesis fulfills the requirement of carbon. Carbon dioxide is used in photosynthesis to produce glucose.
Option B is incorrect because photosynthesis fulfills the requirement of water. Water is used in photosynthesis to produce glucose.
Option C is incorrect because photosynthesis fulfills the requirement of energy. Light energy is used in photosynthesis to produce glucose.