Food Chain & Food Web Builder

Every living thing in an ecosystem has a role. These roles determine how energy moves through the food chain.

• Producers make their own food using sunlight (plants, algae)
• Consumers eat other organisms to get energy
• Herbivores eat only plants (rabbit, deer)
• Carnivores eat only animals (fox, hawk)
• Decomposers break down dead matter and return nutrients to the soil (mushroom, earthworm)

Energy flows from the sun to producers to consumers. Arrows in a food chain show the direction energy moves.

• The sun is the original source of energy for most ecosystems
• Producers capture sunlight and turn it into food
• Each level gets only about 10% of the energy from the level below
• That is why food chains rarely have more than 4 or 5 levels

Arrows always point in the direction energy travels, from prey to predator.

A food chain is a single path showing one way energy moves. A food web shows all the connected chains in an ecosystem.

• A food chain is simple and linear, like Grass → Rabbit → Fox
• A food web connects many chains together
• Most animals eat more than one thing, which creates the web
• Organisms that appear in multiple chains are shared links

Real ecosystems are always food webs. Food chains are a simpler way to understand one path of energy.

Removing one organism from a food web affects the whole ecosystem. The effects ripple through connected species.

• Predators may lose food sources and decline
• Prey populations may grow too large without a predator
• Overpopulation leads to resource competition and habitat damage
• Balance in a food web keeps every population healthy

This is why protecting every species matters. Even small organisms like insects and worms play big roles in the ecosystem.