Biology > GIZMOS > Exploration: Food Chain Vocabulary: consumer, ecosystem, equilibrium, food chain, population, predat (All)
Exploration: Food Chain Vocabulary: consumer, ecosystem, equilibrium, food chain, population, predator, prey, producer
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1. Producers are organisms that do not need to eat other organisms to obtain energy. A. Which organism is a producer in this food chain? Grass B. Where does the producer get its energy? Sun 2. Cons... umers must eat other organisms for energy. Which organisms are consumers in this food chain? Hawks and Snakes Gizmo Warm-up The SIMULATION pane of the Gizmo shows the current population, or number, of each organism in the food chain. 1. What are the current populations of each organism? Hawks: 42 Snakes: 278 Rabbits: 2566 Grass: 27300 2. Select the BAR CHART tab, and click Play ( ). What do you notice about each population as time goes by? The groups tend to stay exactly the same and well balanced. If populations don’t change very much over time, the ecosystem is in equilibrium. 3. Compare the equilibrium populations of the four organisms. Why do you think populations decrease at higher levels of the food chain? Because the higher they are on the food chain the more of the animals they need to eat be low them meaning there isn’t enough food for the population to be bigger than the lower species [Show More]
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