5.9D - Ecosystem Changes

What would cause a decrease in the rabbit population?

• An increase in grass growing
• A decrease in caterpillars
• An increase in owls
• An increase in fox

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Natural disasters can also change ecosystems. What can organisms do if a disaster happens?

• Fight, Survive, Struggle

• Move, Adapt, Die

• Stay, Sleep, Survive

• Eat, Sleep, Repeat

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too many of the same organism in one area

• native species

• overpopulation

• invasive species

• restore (restoration)

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type of organisms that normally live in a particular ecosystem

• overpopulation

• invasive species

• native species

• impact

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organisms that entered a new ecosystem and multiplied, hurting native species and their habitats

• overpopulation

• inpact

• restore (restoration)

• Invasive species

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How does a bird "change its environment" to meet its NEEDS?

• builds a nest
• flies around
• catches bugs
• looks for something to eat

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Which of the following would have a negative impact on an ecosystem

• constructing highways
• planting trees
• recycling paper

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A species of giant pandas lives only in central China. Bamboo, a tall, green tropical plant, is the main food source for these animals. Large areas of bamboo are being cut down in central China to make room for growing other crops. What will MOST LIKELY happen to these giant pandas?

• They will become endangered or extinct

• They will migrate to warmer areas of China

• They will become carnivores

• They will begin to live in caves

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The Great Barrier Reef has a number of endangered species which live only in that ecosystem. What would MOST LIKELY happen if pollution killed most of the coral that made up the reef?

• The endangered species might become extinct

• The animals on the reef would find a new habitat

• The population size of the endangered species would increase

• The endangered species would take the niche of the dead coral

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The marsh willow herb is a plant that naturally grows in the northeastern part of the United States. It grows best in damp habitats. Which of the following environmental changes would MOST LIKELY cause a decrease in the marsh willow herb population in an area?

• A rainstorm lasting several weeks

• A drought lasting more than a year

• Unusually low temperatures during the month of July

• Unusually high temperatures during the month of January

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NGSS.MS-LS2-1

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