Unit 11 Ecosystems

What two things have a negative affect on the environment?

• Highways

• Drought

• Community Garden

• Pond

• Restore a wetland

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If an invasive plant took over a pond, what would be two negative affects?

• There will be less native plants for animals to eat.

• Several new plants will grow on the banks of the lake.

• Animals will have cleaner water to drink.

• Organisms that live in the lake will have fewer places to hide.

• Less sunlight will reach the plants that grow under water.

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Jasmine went on a vacation to the beach with her family. When they arrived, she noticed a lot of pollution on the shore.

What kind of negative effects does this have on the ocean and its inhabitants?

• .Some organisms may get sick by eating the pollution.

• The organisms use the pollution to make their homes.

• The pollution does not affect the organisms in the ocean.

• Some organisms may get tangled in the pollution and die.

• Some of the organisms use the pollution as camouflage.

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An eight lane highway was built through an ecosystem.

Which effects to the ecosystem MOST LIKELY occurred when the highway was built?

Select TWO correct answers.

• Competition for resources would be reduced.

• Animal habitats would be reduced.

• Noise pollution would decrease.

• Air pollution would increase.

• Water pollution would decrease.

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Which bird would be most affected by the farmer protecting his crops by poisoning the rats?

• Hawk

• Hummingbird

• Mockingbird

• Chicken

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Perfect weather conditions have led to a large increase in the number of deer in an area. What impact will this population increase have on the ecosystem?

• The number of coyotes will decrease because of increased competition for food.

• The amount and variety of plants will decrease due to overgrazing.

• The risk of wildfire will decrease due to a reduced plant life.

• The number of rabbits will increase because there will be an increase in available food.

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Coyotes roam over large areas of land in Texas. What effect would building a mall in the coyotes' territory have on these animals?

• The coyote population would increase.

• The size of the coyote population would remain unchanged.

• The size of the coyotes' habitat would decrease.

• The coyotes would leave the entire area.

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If the cougar were to disappear from a forest ecosystem, what could you predict might happen?

• The deer would increase

• Snakes would increase

• Birds would decrease

• Deer would decreases

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What organisms depend on only the sun for energy?

• Birds

• Mushrooms

• Plants

• Fish

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Which organism would get their energy from only a producer? (They are a herbivore)

• Rabit

• Hawk

• Snake

• Mushroom

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