Food Waste quiz
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Roughly how much of the world's food is lost or wasted?
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More questions about Food Waste
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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What fuel do digesters make from food scraps?
Answer: Biogas
Why: What remains after digestion, a sludge called digestate, is spread on farmland as a nutrient-rich fertiliser.
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How long does constantly frozen food stay safe to eat?
Answer: Indefinitely
Why: The USDA says freezer burn, the dry greyish-brown spots on old frozen food, affects quality, not safety.
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Who opened a soup kitchen using Expo 2015's surplus food?
Answer: Massimo Bottura
Why: His Milan soup kitchen, Refettorio Ambrosiano, was set up inside a disused 1930s theatre.
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What do landfills lack that composting needs?
Answer: Oxygen
Why: In 1989 archaeologists dug a 1952 newspaper out of a landfill, and it was still perfectly readable.
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What is gathering crops left in fields after harvest called?
Answer: Gleaning
Why: For centuries gleaning was a right that let the poorest villagers keep the grain harvesters left behind.
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What 2001 outbreak led the UK to ban feeding food scraps to pigs?
Answer: Foot-and-mouth disease
Why: The epidemic began on a Northumberland farm whose pigs were fed unprocessed food waste containing infected meat.
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