Explain why the sun is such an important part of all ecosystems.

The sun's energy gives power to everything on Earth. Plants use sunlight to make food. Animals get their energy by eating plants. Even animals that eat other animals get their energy from plants. And all of the energy in plants comes from the sun. Energy from the sun is called solar energy.

The two most important climatic factors for an ecosystem is water and sunlight. sunlight is necessary for plants to growing to provide energy to warm the earths atmosphere.