The picture represents a nuclear explosion, but the process that produces most of the energy used by living organisms on Earth is photosynthesis. This process uses light to convert water and carbon dioxide into glucose, storing energy essential for life.
The picture you sent is a cartoon illustration of a nuclear explosion, but the question asks which process produces most of the energy used by living organisms on Earth. The answer is photosynthesis.
Photosynthesis is a process used by plants and other autotrophic organisms to convert light energy into chemical energy. The chemical energy is then stored in carbohydrates, such as glucose, which can be used for cellular respiration or converted into other organic molecules.
Photosynthesis takes place in two stages:
1. The light-dependent reactions: These reactions use light energy to split water molecules into hydrogen and oxygen. The hydrogen atoms are then used to produce NADPH, a molecule that stores energy, and ATP, a molecule that provides energy for cellular processes.
2. The Calvin cycle: This cycle uses the energy from NADPH and ATP to convert carbon dioxide into glucose.
Photosynthesis is essential for life on Earth. It is the primary source of energy for all living organisms, either directly or indirectly. All animals, fungi, and bacteria rely on plants for food, and plants rely on photosynthesis to produce the food they need to survive.