Biodiversity and Human Impact

Changes to an ecosystem's biodiversity can have a direct effect on humans because humans-

• inhabit all areas of the Earth's ecosystems

• use minerals from the ground to make things

• depend on the Earth's natural resources

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A reduction in the variety of pollinating insects would negatively affect the plant populations that depend on them. Which of the following describes the most serious impact this would have on humans?

• Plants that don't need insects to pollinate would take over most habitats

• there would be a decrease in the availability of honey

• crops that humans use for food would be diminished

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Why is biodiversity important in the ocean?

• the organic matter in soil contains nutrients which are essential

• producers in the ocean produce up to 90% of the world's oxygen

• pollinators are important for crop production

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how do people rely on marine water ecosystems?

• humans rely on oceans for transporting goods, mining the ocean floor, food sources, and recreational activities

• humans rely on oceans for the growth of corn, cotton, and freshwater plants

• humans rely on marine water for the formation of rich soil

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deforestation is

• the action of clearing a wide area of trees

• the number of different species of plants and animals in an area

• site for disposal of garbage

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Introducing non-native species can

• cause a decrease in biodiversity

• can harm native species

• Can decrease biodiversity and harm native species

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landfills are

• where we put extra dirt

• empty areas in the land

• Site for disposal of garbage

Conservation is

• Prevention of wasteful use of a resource

• trowing paper into the trashcan

• polluting the ocean

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