Understand the concept of a food chain: A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
Identify the role of producers: Producers, such as plants, are organisms that can make their own food through photosynthesis and are the starting point of the food chain.
Recognize the role of primary consumers: Primary consumers are herbivores that eat producers to obtain energy.
Understand the role of secondary consumers: Secondary consumers are carnivores or omnivores that eat primary consumers.
Identify the role of tertiary consumers: Tertiary consumers are predators at the top of the food chain that eat secondary consumers.