Earth Systems and Human Impact QuizOnline version Test your knowledge on how human activities affect Earth's systems! by Paul Green 1 What is a major way human activity affects the carbon cycle? a Recycling reduces CO2 levels. b Burning fossil fuels increases CO2 levels. c Planting trees decreases CO2 levels. d Using solar energy increases CO2 levels. 2 How does deforestation impact the water cycle? a It reduces transpiration and alters precipitation patterns. b It increases evaporation rates. c It has no effect on the water cycle. d It increases soil moisture. 3 What human activity contributes to ocean acidification? a CO2 emissions from burning fossil fuels. b Overfishing. c Oil spills. d Plastic pollution. 4 Which greenhouse gas is primarily released from agriculture? a Ozone from air pollution. b Carbon dioxide from factories. c Methane from livestock. d Nitrous oxide from vehicles. 5 What is a consequence of urbanization on local climates? a It increases rainfall. b It has no effect on climate. c It creates urban heat islands. d It cools the area. 6 How does pollution affect biodiversity? a It increases species diversity. b It has no impact on biodiversity. c It only affects land animals. d It can lead to habitat degradation and species loss. 7 What role do wetlands play in human activity? a They have no ecological role. b They contribute to pollution. c They filter pollutants and provide flood protection. d They are primarily for recreation. 8 What is a significant effect of climate change on weather patterns? a Increased frequency of extreme weather events. b More stable weather patterns. c Less variation in temperatures. d Decreased rainfall globally. 9 How does mining impact the Earth's systems? a It increases biodiversity. b It has no environmental impact. c It improves soil quality. d It disrupts ecosystems and causes soil erosion. 10 What is a direct result of overfishing? a Decline in fish populations and ecosystem imbalance. b Stabilization of marine ecosystems. c Increase in fish populations. d No change in marine life. 11 What is biomagnification? a The process of recycling organic waste. b The growth of plants in polluted areas. c The decline of species due to habitat loss. d The increase of toxic substances in organisms at each food chain level. 12 What type of relationship is commensalism? a One organism benefits while the other is neither helped nor harmed. b Both organisms are harmed. c Both organisms benefit. d One organism harms the other. 13 What defines a renewable resource? a A resource that is harmful to the environment. b A resource that cannot be replaced. c A resource that is always available. d A resource that can be replenished naturally over time. 14 What is mutualism? a A symbiotic relationship where both organisms benefit. b A relationship where one is harmed. c A relationship with no impact on either. d A harmful relationship for both organisms. 15 What does deforestation lead to? a Improved air quality. b More natural resources. c Increased biodiversity. d Damage to the quality of the land. 16 What is the main consequence of climate change? a Stable weather patterns. b Decreased greenhouse gases. c Significant and lasting changes in the Earth's climate. d Increased biodiversity. 17 What is parasitism? a A relationship where one organism benefits at the expense of another. b A mutually beneficial relationship. c A neutral interaction. d A relationship with no impact. 18 What is competition in ecology? a Cooperation between species. b The act of one organism hunting another. c Symbiotic relationships. d The struggle for limited resources among organisms. 19 What is a watershed? a An area of land that separates waters flowing to different bodies. b A type of renewable resource. c A measure of biodiversity. d A method of water purification. 20 What does sustainable mean? a The destruction of habitats. b The process of rapid growth. c The use of nonrenewable resources. d The ability to be maintained without depleting resources.
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