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Free Ecology & Environment quiz: 76 trivia questions and answers — climate, recycling & biodiversity. Easy to hard, with explained answers. No sign-up.
Start this quiz →🖨️ Printable version (20 questions + answers)
From the Montreal Protocol to Earth Overshoot Day, this quiz explores environmental issues and progress in the fight for ecology. A fun way to better understand our impact on the planet.
This quiz currently has 76 questions, ranging from easy to hard, available in French, English and Spanish when the Spanish translation is available.
Warm up before the quiz with these 15 trivia questions and their explained answers: click a question to reveal the answer.
Answer: Agriculture. Agricultural expansion, especially for soybean farming and livestock grazing, is the main cause of deforestation.
Answer: Reduce your meat consumption. Livestock farming is a major source of greenhouse gas emissions. Reducing meat consumption can therefore lower your carbon footprint.
Answer: Install water-efficient faucets. Water-efficient faucets reduce water flow without affecting pressure, allowing for less water consumption.
Answer: Ecosystem imbalance. Overfishing reduces fish populations, disrupting the natural balance of marine ecosystems.
Answer: Passenger cars. Passenger cars account for about 55% of CO₂ emissions in the transportation sector in France.
Answer: The environmental impact of battery production. Battery production requires extracting rare, energy-intensive metals, with a significant ecological impact.
Answer: Anticipatory, smooth driving. Anticipatory, smooth driving reduces sudden braking and tire wear, lowering fine particle emissions.
Answer: It releases methane and CO₂ stored for thousands of years. Permafrost holds huge amounts of frozen organic matter. As it thaws, this matter decomposes and releases CO₂ and methane, which further amplifies warming: a positive feedback loop.
Answer: Ocean acidification. Ocean acidification is caused by the absorption of atmospheric CO₂, which lowers the pH of seawater.
Answer: Germany. Germany launched the first green hydrogen trains in 2018, replacing diesel trains on certain lines.
Answer: Norway. Norway is considered a global leader thanks to its deposit return system operated by Infinitum, which recovers more than 90% of plastic bottles for recycling
Answer: Israel-Hamas war. Studies estimate that the destruction in Gaza and its rebuilding (cement, steel) represent very large CO₂ emissions. Precise figures vary between sources.
Answer: Soil pollution from heavy metals. Ammunition often contains heavy metals such as lead and depleted uranium, which contaminate soil.
Answer: Increases consumption by 5 to 10%. Underinflation of 0.5 bar increases rolling resistance, which can increase fuel consumption by 5 to 10%.
Answer: Nitrous oxide (N₂O). Nitrous oxide (N₂O), emitted by engines, is a greenhouse gas 300 times more powerful than CO₂ over 100 years. Modern gasoline vehicles emit proportionally more N2O per gram of NO treated than diesel engines, due to the chemical nature of the reactions in their catalytic converters.
61 more questions are waiting for you in the quiz!