A habitat is home to a tangle of food chains called ___

• a nutrient hub
• an energy chain
• a food web
• the carbon cycle

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The things in an ecosystem are all ___

• separate
• connected
• scattered
• unrelated

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Leopards dine on ___

• figs and spider monkeys
• sloths and strangler figs
• sloths and spider monkeys
• ants and bats

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Frogs eat ___

• bats
• insects
• spider monkeys
• strangler figs

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The good news is that ecosystems tend to be ___

• in decline
• out of balance
• delicate
• in balance

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Which group is not represented in the food web?

• producers

• primary consumers

• secondary consumers

• decomposers

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What do the arrows in the food chain indicate about the flow of energy in an ecosystem?

• Energy is continuously recycled by the organisms in an ecosystem.

• Energy flows in one direction in an ecosystem, from producers to consumers.

• More of the available energy in an ecosystem is given to large animals than to small animals.

• Organisms at the end of the food chain receive more energy than those at the beginning.

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In this energy pyramid, which organism would most likely be in level 2?

• bird

• fox

• caterpillar

• tree

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Which one of the following is true of grass in an ecosystem?

• It converts oxygen to glucose.

• It produces carbon dioxide from oxygen and water.

• It produces glucose from carbon dioxide and water.

• It converts water to energy.

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The diagram shows part of an aquatic food web for a stable lake ecosystem in Connecticut. What is the source of energy for the algae?

• waves

• sunlight

• bacteria

• rotifers, water fleas and tadpoles

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