Which of the following provide most of the energy in ecosystems?

The Sun

Explanation:

The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water.

the sun

Explanation:

Teaching about energy in biological processes is supported by 6 key concepts: 3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

the endomembrane system i think