Organic Farming quiz

More questions about Organic Farming

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   What fertilizer is banned on organic farms?

   Answer: Sewage sludge

   Why: Slaughterhouse leftovers such as bone meal and blood meal are allowed on EU organic fields, but sewage sludge is not.

2. 2 Medium

   What did a 2012 Stanford review find about organic food's vitamins?

   Answer: No clear difference

   Why: The same review found a 30% lower risk of pesticide residues in organic produce, though residues in all foods were generally within safety limits.

3. 3 Hard

   How far around EU organic hives must flowers be mostly organic or wild?

   Answer: 3 km

   Why: That 3 km radius draws a circle of about 28 square kilometres around the hive.

4. 4 Easy

   Where does a green 'AB' logo mark organic food?

   Answer: France

   Why: France's AB logo dates from 1985 and is optional, while the EU leaf is mandatory on prepacked organic food made in the EU.

5. 5 Medium

   Which way of preserving food do organic rules ban?

   Answer: Irradiation

   Why: US organic rules ban irradiating food to preserve it or kill pests, yet still allow X-ray scanners that inspect it.

6. 6 Hard

   How many days a year must US organic cows graze at minimum?

   Answer: 120

   Why: In that season, pasture must supply on average at least 30% of what the animals eat, measured as dry matter.