Answer:
The Sun is the ultimate source of energy for almost all living cells on Earth as it powers photosynthesis and drives many of Earth's physical processes.
Step-by-step explanation:
The ultimate source of energy for almost all living cells on Earth is the Sun. The Sun is the primary source of energy for the Earth, and it powers almost all cells as photosynthetic prokaryotes, algae, and plant cells harness solar energy and use it to make the complex organic food molecules that other cells rely on for the energy required to sustain growth, metabolism, and reproduction.
Photosynthesis is the process by which plants convert solar energy into chemical energy in the form of glucose and oxygen. This glucose is then used by living organisms as a source of energy. The energy used to drive the photosynthesis process is stored in the glucose molecules, which are then used by consumers, such as herbivores and carnivores, as food.
The sun is also the source of nearly all the heat and light that we experience every day, and it drives many of Earth's physical processes. For example, sunlight warms the atmosphere, which drives atmospheric circulation patterns, and it plays a role in evaporating water from the surface of oceans, lakes, and rivers.
In addition to being the primary source of energy for living things, sunlight also drives many of Earth's physical processes, such as the water cycle, which moves water vapor through the atmosphere and ultimately returns it to Earth's surface as precipitation.