Env. Science - Chapter 3 Pre-Assessment

What is the difference between a producer and a consumer?

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what is the difference between a carnivore and an omnivore?

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what is the difference between the carbon cycle and the nitrogen cycle?

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what is the difference between a food web and a food chain?

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which is NOT true about consumers?

• they get energy directly from the sun

• they are also called heterotrophs

• they make their own food

• they sometimes eat other consumers

which is correctly arranged from the lowest trophic level to the highest?

• bacteria, frog, eagle, mushroom

• algae, deer, wolf, hawk

• grass, mouse snake, eagle

• grass, bass, minnow, snake

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communities of bacteria have been found living hundreds of feet underwater. Which is a proper conclusion to draw from this?

• somehow they are conducting photosynthesis

• they are living on borrowed time

• they were somehow introduced by human activities

• they use an energy source other than sunlight

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which of these pairs of organisms probably belong to the same trophic level?

• humans and bears

• bears and deer

• humans and cows

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the energy lost between trophic levels...

• can be captured only by parasitic organisms

• cools the surrounding environment

• is used in the course of normal living

• disappears forever

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from producer to secondary consumer, about how much energy is lost

• 10%

• 90%

• 99%

• 100%

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