Chemistry Topic 1/Topic 2 ,Rocks

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1. What is Deforestation and how does it effect the atmosphere?

  • Its add sulfur dioxide.
  • Is when you cut down an area of tree and it contributes to the amount of CO2 as tree take it in and let oxygen out.
  • It makes animals homeless.
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2. What was the early atmosphere like?

  • 30% Oxygen, 50% Carbon dioxide and 20% Argon.
  • Mostly carbon dioxide (CO2) with virtually no Oxygen.
  • 50% Carbon dioxide and 50% Carbon Monoxide.

3. What gases make up today's atmosphere?

  • 50% Oxygen, 40% Carbon dioxide, 5% Nitrogen and 5% Argon
  • 78% Nitrogen, 21% Oxygen, small gases, nearly 1% Argon and 0.04% Carbon dioxide.
  • 80% Oxygen, 28% Carbon dioxide and 2% Argon.

4. How do igneous rocks form?

  • When magma pushes up into the crust before cooling and solidifying.
  • When a volcano erupts and the rock that lands in the sea as the salt turns it igneous.
  • When sedimentary are over 100 years old.

5. What type of rock is Limestone and chalk?

  • Igneous
  • Sedimentary
  • Metamorphic

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