1. Photosynthesis: Plants use sunlight, water, and carbon dioxide to produce glucose (a type of sugar) and oxygen. This glucose is their stored energy.
2. Herbivores: Herbivores (animals that eat plants) consume plants and obtain the stored glucose. This glucose is broken down through cellular respiration to release energy for the herbivore's own activities.
3. Carnivores: Carnivores (animals that eat other animals) eat herbivores. They obtain the energy stored in the herbivore's body, which ultimately came from the plants the herbivore consumed.
4. Decomposers: When plants and animals die, decomposers (like bacteria and fungi) break them down. They release nutrients back into the environment, which are then used by plants to continue the cycle of photosynthesis.
In summary:
* Plants capture energy from the sun through photosynthesis.
* Herbivores consume plants, getting the energy stored in the glucose.
* Carnivores consume herbivores, getting the energy that originated in plants.
* Decomposers break down dead organisms, returning nutrients to the environment for plants to use.
This process is known as the food chain or food web, and it shows how energy flows through an ecosystem.
