2.2.10—Producers and food chains

A food chain starts with producers and follows organic matter and energy from food source to consumer.

The arrow means ‘is eaten by’ or ‘matter flows to’, not ‘attacks’. Primary consumers eat producers; later consumers follow.

Oak → caterpillar → tit → hawk: each arrow points to the organism receiving the food.

Caterpillar → tit, because organic matter moves from food to eater.

Do not point arrows from predator toward prey.