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HUMAN IMPACT 25-26

HUMAN IMPACT

QuestionAnswer
Sustainability A balance between Earth's resources, human needs, and the needs of other species
Ecological footprint The amount of carbon emitted by humans and its environmental impact
Renewable resources Resources replaced faster than they are used
Examples of renewable resources Sunlight, wind, water, oxygen, wood
Nonrenewable resources Resources used faster than they are formed
Examples of nonrenewable resources
Technology affects sustainability by Increasing pollution and providing solutions
Goal of agricultural technology Increase food production
Agricultural technology examples Fertilizers, irrigation, farm machinery, contour farming
Negative impact of fertilizers Excess nutrients that alter soil and ecosystems
Negative impact of farm machinery Uses fossil fuels and causes pollution
Goal of alternative energy technology Provide clean energy without harming the atmosphere
Examples of alternative energy Solar, wind, water, nuclear
Benefit of alternative energy Reduces fossil fuel use
Drawback of alternative energy High cost and radioactive waste
Goal of industrial technology Improve manufacturing, transportation, and communication
Industrial technology produces CFCs and pollution
CFCs are Chlorofluorocarbons
CFCs harm the environment by Depleting the ozone layer
Ozone layer function Blocks harmful UV radiation
Burning fossil fuels causes Increased greenhouse gases
Greenhouse effect Natural warming caused by gases trapping heat
Greenhouse gases CO2, CH4, H2O
Increased greenhouse gases lead to Global warming
Global warming Increase in Earth’s average temperature
Acid rain is caused by Burning fossil fuels
Acid rain affects soil by Lowering pH and removing nutrients
Acid rain affects water by Changing aquatic pH
Biodiversity Variety of life on Earth
High biodiversity indicates A healthy ecosystem
Humans reduce biodiversity by Habitat destruction and pollution
Habitat fragmentation Breaking habitats into smaller pieces
Invasive species Non-native species that harm ecosystems
Example of invasive species Water hyacinth
Created by: pnetha
 

 



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