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Bio Concept 4 Notes

Human Impact Notes for 1/29 Biology Test

QuestionAnswer
What is sustainability? a balance between Earth's resources, human needs, and the needs of other species
What is the ecological (carbon) footprint? the amount of carbon emitted and its environment impact
What are renewable resources? resources that are produced or replenished more quickly than they are consumed
What are examples of renewable resources? oxygen, wood, water, sunlight, wind
What are nonrenewable resources? resources that are consumed/used more quickly than they are created
What are examples of nonrenewable resources? fossil fuels, metal, plastic
What are the 3 main types of technology that influence sustainability? 1. agricultural technology 2. alternative energy technology 3. industrial technology
What is the goal of agricultural technology? to increase food productivity
What are 4 pros of agricultural technology? 1. contour farming 2. fertilizers 3. irrigation systems 4. farm machinery
What are 2 cons of agricultural technology? 1. fertilizers cause excess nitrogen, which alters soil 2. farm machinery runs on fossil fuels and pollutes
What is the goal of alternative energy technology? to provide "clean" energy to power society without negatively influencing the atmosphere
What are 2 pros of alternative energy technology? 1. decreases the burning of fossil fuels 2. uses renewable resources such as sunlight, wind, water, and nuclear
What are 2 cons of alternative energy technology? 1. expensive 2. nuclear energy creates radioactive waste
What is the goal of industrial technology? to increase manufacturing efficiency, transportation, and communication
What is 3 pros of industrial technology? 1. improved communication 2. faster transportation 3. cheaper industries
What are 2 cons of industrial technology? 1. creation of CFCs (chlorofluorocarbons) from foam packing material and refrigerant 2. burning of fossil fuels (increases greenhouse gases and produces acid rain)
What do CFCs (chlorofluorocarbons) deplete? the ozone layer
How does acid rain affect the soil? acid rain lowers soil pH, leaches soil nutrients, and changes aquatic pH
What is the greenhouse effect? the normal warming effect when gases trap heat in the atmosphere
What are the 4 greenhouse symbols (and their chemical formulas) 1. carbon: CO2 2. oxygen: O2 3. methane: CH4 4. water vapor: H20
What are the 2 things greenhouse gases do to affect the atmosphere? 1. trap heat energy and maintain Earth's temperature range 2. prevent heat from escaping the atmosphere so it stays trapped
What is global warming? when CFCs deplete the ozone layer, allowing more of the sun's UV rays to get in
What is the key contributor to global warming? burning fossil fuels
How does burning fossil fuels contribute to global warming? combustion releases extra CO2 into the atmosphere, which increases the amount of greenhouse gases, which increases the Earth's overall temperature
What is biodiversity? the total amount of variation of life on Earth
What does high biodiversity reflect? a healthy ecosystem
What are the 3 ways humans threaten biodiversity? 1. habitat destruction and fragmentation 2. pollution 3. introduction of invasive species
What are invasive species? non-native species introduced to an ecosystem that negatively harms it
Created by: miayablasingame
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