Other questions in this quiz

2. Oxygen increased by:

  • photosynthesis - cyanobacteria.
  • dissolving in oceans.
  • volcanoes.
  • respiration.

3. In incomplete combustion, hydrocarbons burn to produce what:

  • carbon monoxide and water
  • oxygen and methane
  • carbon dioxide and water
  • carbon dioxide only

4. Calcium oxide + water -->

  • calcium dioxide and hydrogen - fizzing/bubbling.
  • calcium hydroxide - fizzing/bubbling.
  • carbon dioxide + calcium - fizzing/bubbling.

5. Disadvantages of quarrying limestone:

  • useful.
  • permanently changes landscape, noisy and dusty, destroys habitats, transportation means noise and pollution.
  • jobs.

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