Environmental cycles

Question 1

Fossilization and unavailable carbon

Answer 1

The burial and transformation of organic matter into fossil fuels

Question 2

Combustion of fossil fuels

Answer 2

when burned, fossil fuels release large amounts of carbon dioxide into the atmosphere.

Question 3

Limestone weathering

Answer 3

Limestone is composed of calcium carbonate which reacts with cids within rainwater and soil. This then produces CO2 into the atmosphere

Question 4

Deforestation and fires

Answer 4

when trees or vegetation are cut or burned, the carbon stored in their tissues and cells are released into the atmosphere as CO2.