In an ecosystem, organisms depend on each other for energy through the food chain and food web: 1. Producers (Plants, Algae, Phytoplankton) – Capture energy from the sun through photosynthesis and serve as food for primary consumers. 2. Primary Consumers (Herbivores) – Eat plants to obtain energy. 3. Secondary Consumers (Carnivores/Omnivores) – Eat herbivores for energy. 4. Tertiary Consumers (Top Predators) – Eat other carnivores and keep the population balanced. 5. Decomposers (Fungi, Bacteria) – Break down dead organisms, returning nutrients to the soil for plants to use again.What Happens if a Species Disappears?If a species disappears, it disrupts the balance of the ecosystem: • If producers disappear → Herbivores will have no food, leading to their decline, which then affects carnivores. • If primary consumers disappear → Plants may overgrow, and carnivores will lose their food source. • If top predators disappear → Herbivore populations may grow uncontrollably, leading to overgrazing and depletion of plant life. • If decomposers disappear → Waste and dead matter would accumulate, and nutrients wouldn’t return to the soil, affecting plant growth.Each species plays a crucial role, and the loss of one can cause a domino effect that affects the entire ecosystem.