The reason that panda bears are vulnerable to extinction is feed high on a high trophic level.
The place an organism holds in a food web determines its trophic level. A food chain is a series of living things that consume other things and may eventually destroy themselves. An organism's trophic level is determined by how far along its food chain. In a food chain, primary producers like plants begin at trophic level 1, followed by herbivores at level 2, carnivores at level 3 or above, and often apex predators at level 4 or 5.
Panda Cubs perched on a tree. Primary consumers and herbivores consume producers like plants and algae. Like these pups at the Wolong Natural Reserve in China, giant pandas are herbivores. A creature that mostly consumes plants is a herbivore.
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