Enviro-Quiz Challenge Test your knowledge on key environmental issues affecting our planet! See if you can answer all 10 questions correctly rihanna80 published on May 24 Stacked 1/10 What is the leading cause of rainforest deforestation? Agriculture Urbanization Mining Logging 2/10 Which gas is primarily responsible for global warming? Carbon Dioxide Oxygen Nitrogen Methane 3/10 What percentage of plastic waste is recycled globally? 9% 25% 50% 75% 4/10 Which of the following is a major cause of coral reef destruction? Ocean acidification Overfishing Pollution Tourism 5/10 What is the main source of mercury pollution in the environment? Coal-fired power plants Agricultural runoff Oil spills Plastic pollution 6/10 What is the biggest threat to biodiversity worldwide? Habitat destruction Climate change Invasive species Pollution 7/10 Which country is the largest emitter of greenhouse gases? China United States India Russia 8/10 What is the main cause of ozone depletion in the stratosphere? Chlorofluorocarbons (CFCs) Sulfur dioxide Carbon monoxide Nitrogen oxides 9/10 Which marine species is most threatened by plastic pollution? Sea turtles Sharks Dolphins Whales 10/10 What is the main cause of deforestation in the Amazon rainforest? Cattle ranching Palm oil plantations Illegal logging Mining