Answer:
A: The energy in most ecosystems flows through the food chain. In terrestrial ecosystems and most marine ecosystems, the energy flow starts in green plants that harvest some of the sun’s energy. The plants are then consumed by animals, bacteria and other creatures, which are themselves eaten by other creatures.
Explanation:
The Earth has four spheres in which everything that can be found on earth is placed. The spheres are: hydrosphere, biosphere, lithosphere, and atmosphere . Hydsropshere consists of all water found on Earth, it comes from the word ‘hydro’ which stands for water. The biosphere includes all living things. animals, plants, and microorganisms. The litosphere comes from the word "litho" which means land and includes hard and solid land mass on the earth’s surface and rocks. The atmosphere come from the word "atmo" which means air and is made up from the air, which is a mixture of gasses.