Who eats whom — Biology, 4–6 years
Food links living things together: plants are eaten by some animals, and those animals may be eaten by others.
A chain of eating
In nature, one living thing can become food for another. A green plant may be eaten by a rabbit, and the rabbit may be eaten by a fox. Arrows in a food chain point from the food to the eater: plant to rabbit to fox.
Why make a chain
It is hard to see how living things in a meadow depend on one another. A food chain helps us follow the path of food and understand what may happen if one link disappears. People built this idea by observing animals’ meals and comparing what was found in different places.
Grass, rabbit, fox
Imagine a meadow with 10 rabbits. First, each rabbit eats grass, so grass is the rabbits’ food. Next, one fox catches and eats a rabbit, so the rabbit is the fox’s food. The chain is grass → rabbit → fox, showing who receives food from whom.
The arrow’s direction
Many people draw the arrow from the fox to the rabbit because the fox chases the rabbit. That feels reasonable when the arrow means “moves towards”. In a food chain, however, the arrow means “food goes to the eater”, so it points from rabbit to fox.
Looking after a meadow
Farmers and people caring for parks use food chains to think about changes. If grass is covered or many insects are removed, animals that eat them may have less food. The chain does not predict every detail, but it reminds us that a change can affect several living things.
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