ES Semester 1 menu Trophic levels

This diagram models how much each eats in a day. If each of the tiny fish has 2 mg of toxin in their body, how many mg of toxin does the shark get each day?

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NGSS.MS-LS2-3

If every day a rabbit eats berries that contain 5 mg of toxin, how many days will pass before the toxin builds up to 45 mg if none leaves the rabbit's system?

Are these two dogs the same species?

• Yes

• No

• There is no way to know

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NGSS.MS-LS4-2

How do carnivores obtain their energy?

• By consuming plants

• By consuming other animals

• By photosynthesis

• By decomposing organic matter

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NGSS.MS-LS2-3

Which of the following animals is a carnivore?

• Cow

• Deer

• Lion

• Rabbit

How can negative feedback loops contribute to ecosystem stability?

• By amplifying changes in the ecosystem

• By reducing the impact of disturbances and maintaining balance

• By causing rapid changes in species populations

• By eliminating all predators from the ecosystem

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NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is a feedback loop in the context of ecosystems?

• A process where the output of a system influences its own input

• A cycle of predator and prey interactions

• A linear sequence of events in an ecosystem

• A random occurrence in nature

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NGSS.MS-LS2-3

What is the primary role of decomposers in an ecosystem?

• To produce energy through photosynthesis

• To break down dead organisms and recycle nutrients

• To compete with herbivores for food

• To provide shelter for other species

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

How does energy flow between trophic levels?

• Energy increases as it moves up the trophic levels

• Energy decreases as it moves up the trophic levels

• Energy remains constant across trophic levels

• Energy is not transferred between trophic levels

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which organism is typically found at the first trophic level?

• Herbivores

• Carnivores

• Producers

• Decomposers

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NGSS.MS-LS2-3