Human Impact

1. What are renewable resources?

• . Resources that are used faster than they form

• resources that can replenish themselves over time

• resources that formed over millions of years

• resources that exist only in rural areas

1. What would Earth be like without the greenhouse effect?

• The same temperature

• a little cooler than it is now

• . Too cold to live

• a little warmer than it is now

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According to the graph, what material’s recycling would reduce the largest portion of America’s trash?

• Metals

• paper

• plastics

• Yard trimmings

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1. Which level of the food chain is most affected by biomagnifications?

• Producers

• primary consumers

• secondary consumers

• tertiary consumers

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1. Which biome has the highest biodiversity and is the most threatened?

• Temperate forests

• grasslands

• tropical rain forests

• deserts

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1. Why is firewood considered to be a renewable resource?

• It can be replenished over time.

• It is used up faster than it can form.

• It is made from coal.

• It can be made synthetically.

1. Why has Earth's human carrying capacity increased greatly?

• Other organisms have been displaced by agriculture, so there is more space for humans.

• Humans have modified their environment due to technological advances.

• Humans can live closer together than other animals

• Humans are now eating fewer plants than they used to.

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1. Which of the following is not a renewable resource?

• coal

• wind energy

• solar energy

• water

1. What factor does not determine the size of an individual's ecological footprint?

• amount and efficiency of resource use

• amount of waste produced

• size of population

• toxicity of waste produced

What is global warming

• the normal temperature fluctuations of Earth's climate cycle

• the melting of the polar ice caps

• the trend of increasing temperatures on Earth

• the changes in Earth's biosphere that affect the atmosphere

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