Other questions in this quiz

2. What is fermentation

  • Dissolving sugar and adding ethene gas to make ethane.
  • dissolving sugar in water and adding yeast to make ethene
  • Fertilising an embryo

3. what does electrolysis mean?

  • purifying using electricity
  • splitting up with electricity
  • changing charge of atoms with electricity
  • removing particles with electricity

4. What is bio-leaching?

  • using bacteria to separate copper from copper sulfide.
  • Using plants and burning them with fire and explosions.
  • Using leaches to break bonds and extract copper.

5. How do you make mortar?

  • Cement, sand and water
  • Cement, water, rocks

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