Chapter 7 Ecology Humans and Global Change Miller and Levine Bio

Which of these statements can be inferred from the data that the map visualizes?

Choose all the correct statements.

• The areas of greatest ecological deficit are represented by red areas.

• Countries within the European Union, the United States, and Japan have disproportionately large ecological footprints.

• The countries in red have ecological footprints that are disproportionately large.

• There are more feet in North America than in other continents.

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Your ecological footprint is the total area of healthy land and water ecosystems needed to provide the resources you use. Select each of the appropriate options.

• Energy

• Shelter

• Sewage, trash, and greenhouse gases.

• Food and water

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Which of the following are NOT examples of anthromes.

• cities

• villages

• wild woodlands

• remote rangelands

Which of the following are ways that humans have caused changes in natural habitats? Choose all that apply.

• habitat restoration

• habitat fragmentation

• habitat loss

• none of the above

According to the data on the visual, the lower pH the water has will produce what effect?

• less acidic

• no effect

• more acidic

• more information is needed

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Which of these ecosystem services are provided by forests? Choose all that apply

• Soil is held in place

• Landslides are most likely to happen

• carbon dioxide is absorbed.

• local climate is moderated.

DDT was one of the first widely used pesticides which was a cheap, long lasting, and effective toxin aimed at controlling agricultural pests and disease-carrying mosquitos. When DDT gets into a water supply, it is concentrated by biological magnification, thus producing disastrous effects. Which can be inferred from this visual about the concentration of DDT as it is consumed by higher-order consumers on the food chain?

• The concentration of DDT is minimized from the water to the fish-eating birds.

• The orange dots represent energy and the fish-eating birds get energy from the orange dots.

• The concentration of DDT is divided up each layer of the food chain.

• The concentration of DDT is multiplied as it passes up the food chain from producers to consumers.

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Now that unleaded gasoline is used widely, what conclusion from the graph can be made?

• All gasoline is still enriched with lead.

• As of 2015, over 150 thousand tons of lead is emitted from on road vehicles.

• There has been an overall incline in lead emissions in the United States.

• Now that unleaded gas is primarily used, lead emissions have dropped, leading to healthier soils, rivers, and streams.

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What is the relationship between habitat size and the number of species that can live there?

• The smaller the habitat fragment is, the larger the number of species that can live there which will allow for greater biodiversity.

• The smaller habitats allow for more specialization of ecoservices, thus benefitting the species that survive.

• The smaller the habitat fragment is, the smaller the number of species that can live there, and the smaller the populations the fragment can support.

• As long as there is land there is great biodiversity and due to resilience there can be populations that can thrive.

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What is the overall trend in the mass of ice on Antartica?

• The mass of ice on Antartica is increasing.

• The mass of ice on Antartica is decreasing.

• The mass of ice on Antartica is measured in Gt

• Not enough data to develop an argument on the overall trend.

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