unit 10 ecology

Which graph best represents the relationship between sustainability and biodiversity?

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NGSS.MS-LS2-5

Scientists have a theory about the relationship between climate and biodiversity. Which best describes this theory?

• Warmer climates promote higher biodiversity, allowing plants to grow year-round. This supports more organisms that rely on plants.

• Colder climates promote higher biodiversity, reducing the competition among organisms for food. This supports stronger organisms that live longer.

• Warmer climates promote higher biodiversity because they tend to receive more rainfall. This provides a source of water for more organisms.

• Colder climates promote higher biodiversity because they are usually larger in size. This provides space for more organisms.

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NGSS.MS-LS2-4

Why are nonnative species a threat to biodiversity?

• They often use up resources that other organisms need.

• They are not able to successfully breed in the wild.

• They release pollution into many environments.

• They easily contract and spread diseases to other organisms.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which best protects animal species that are endangered due to overhunting?

• laws

• increased biodiversity

• poaching

• captive breeding

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NGSS.MS-LS2-5

The image illustrates a human-induced environmental change.

• pollution

• wildlife hazard

• eutrophication

• non-sustainable harvesting

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NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

Which statement describes the current theory about the relationship between the human population and mass extinction?

• The human population is increasing, so the likelihood of a mass extinction is also increasing. 

• The human population is increasing, so the likelihood of a mass extinction is decreasing.

• The human population is decreasing, so the likelihood of a mass extinction is also decreasing.

• The human population is decreasing, so the likelihood of a mass extinction is increasing.

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NGSS.MS-ESS3-4

In the 1980s laws were passed to reduce the amount of certain chemicals used by companies and individuals. According to these laws, the use of chlorofluorocarbons, or CFCs, should be reduced and eventually eliminated. These compounds contain chlorine and cause problems when released into the Earth’s atmosphere.

These laws are meant to reduce which human-induced environmental change?

• nonnative species introduction

• non-sustainable harvesting

• ozone layer depletion

• eutrophication

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NGSS.MS-PS1-3

Which human-induced change results in increased competition caused by an initial increase in the number of organisms in a habitat?

• non-sustainable harvesting

• nonnative species introduction

• ozone layer depletion

• mass extinction

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Gwen is researching the effects of a small asteroid impact in an area that has started to regrow after being hit ten years ago. She considers the event to be a long-term change because the species of plants that were present had to start completely over from seeds after all of the plants in the area were killed by the impact.

What is the error in Gwen’s thinking?

• Species will not regrow after an asteroid impact.

• An asteroid impact is not an environmental change.

• This is a seasonal change, not a long-term change.

• This is a short-term change, not a long-term change.

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NGSS.HS-LS2-6

NGSS.HS-LS4-5

Paulo makes the argument that the asteroid strike that likely contributed to the extinction of the dinosaurs was a short-tem environmental change because it happened so quickly. 

Which is the best analysis of Paulo’s position?

• He is correct; it happened in just a few seconds.

• He is correct; it did not cause any long-term changes.

• He is incorrect; it caused long-term changes.

• He is incorrect; impacts are not environmental changes.