1. What do nitrogen and oxygen form when they are react in hot engines and furnaces?
- Nitrogen oxides
- Oxygen nitrates
- Water (h2o)
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2. How is carbon dioxide removed from the atmosphere?
- Dissolved in oceans, trapped in sedimentary rocks / photosynthesis
- Dissolved into the air
- Taken out by cars
- Not possible to remove it
3. In limited air, what does coal burn to form?
- Nitrogen carbonate
- Sulfur monoxide
- Carbon monoxide
- Carbon dioxide
4. What do catalytic converters remove from exhust fumes?
- Nitrogen oxides and water vapour
- Sulfur dioxide and nitrogen monoxide
- Nitrogen oxides and carbon dioxide
- Sulfur monoxides and carbon dioxide
5. How were oceans formed?
- Water vapour cooled and condensed
- Chemical reactions took place which made water
- Water came up from the ground
- It rained constantly and filled the oceans