Ecology and Human Impacts

Which human activity would preserve nonrenewable resources?

• deforestation
• removing carnivores from a forest 
• recycling
• heating homes with fossil fuels  

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NGSS.MS-ESS3-3

Which human activity is correctly paired with its likely future consequence?

• overfishing in the Atlantic — increase in supply of flounder and salmon as food for people 
• development of electric cars or hybrid vehicles — increased rate of global warming 
• use of fossil fuels — depletion of fossil-fuel based resources and increased CO₂ in atmosphere
• genetically engineering animals — less food available to feed the world’s population

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NGSS.MS-ESS3-4

Which human activity would most likely deplete nonrenewable resources?

• use of natural enemies to eliminate insect pests
• development of wildlife refuges 
• governmental restriction of industrial pollution 
• increased use of fossil fuels

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NGSS.HS-ESS3-2

When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid growth of algae in a process called eutrophication. How can this process affect other organisms in the water?

• Oxygen is used up as algae is decomposed, reducing the amount available to other organisms.
• The water becomes better able to support aerobic organisms.
• The algae provide food for fishes and other organisms, leading to decreased algae populations.
• The extra nitrogen provides additional food for the other organisms, increasing their population.

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What is deforestation?

• throwing someone out of a window
• selectively cutting trees for lumber, making sure the forest remains healthy
• allowing more animals to graze on the land than it can support
• cutting and removal of large tracts of forest to make land available for other uses

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NGSS.MS-ESS3-4

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What are some consequences of deforestation?

• increased population in cities
• building of more infrastructure
• soil erosion, loss of biodiversity, loss of ability to remove CO₂ from the atmosphere
• more mercury and cyanide released into rivers

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NGSS.MS-ESS3-4

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How can people reduce the amount of natural resources they use?

• make more landfills and garbage dumps
• buy products with lots of packaging 
• use water, electricity, and gas conservatively and recycle metal, paper, and glass
• Think only about what you need right now and don’t worry about the future

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NGSS.MS-ESS3-4

Why is biodiversity important?

• It removes mercury and other pollutants
• It stops acid rain
• It creates more fossil fuels
• Biodiversity helps an ecosystem survive impacts such as natural disasters or human impact
  

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NGSS.MS-LS2-5

All of the living and nonliving things in an area that interact with each other are called a/an ______.

• community
• habitat
• population
• ecosystem

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An area where an organism finds food, shelter and water in a specific arrangement

• niche
• biosphere
• biome
• habitat