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What is a food chain?
A sequence showing one pathway of energy transfer between organisms.
What do arrows in a food chain show?
The direction that energy is transferred.
What is a food web?
A network of connected food chains showing multiple pathways of energy transfer.
What is the difference between a food chain and a food web?
A food chain shows one pathway, while a food web shows many connected pathways.
Identify the trophic levels: Grass → Grasshopper → Frog → Snake.
Grass = producer, grasshopper = primary consumer, frog = secondary consumer, snake = tertiary consumer.
What is a trophic level?
An organism's position in a food chain or food web.
What is always at the first trophic level?
Producers.