State three ways human activities add carbon to the atmosphere?

Answer 1

1. Burning fossil fuels (coal, oil and natural gas). This releases billions of tonnes of extra carbon dioxide (CO2) that has been hidden under the ground for millions of years.
2. Cutting down the great forests of the world. Vegetation absorbs CO2 from the atmosphere and stores the carbon. Trees can store half their body weight in carbon for hundreds of years. But only if they are growing.

Answer 2

There are a lots of ways in which carbon added to the atmosphere by human activities

These are the examples

• CO2 from burning fossil fuels
• gas (methane) leaks from underground gas pipes
• methane from rotting material in landfills

Other ones

• combustion of fossil fuels (oil, coal, and gas)
• deforestation (decreasing amount of plants that remove CO2 from the atmosphere)
• industrial production that uses petroleum based products (mineral/metal production)

Answer 3

1. Burning fossil fuels has added large extra amounts of carbon dioxide
2. Deforestation. Cutting down forests means they can no longer absorb carbon dioxide from the atmosphere
3. Cement production: Making cement releases the greenhouse gas, carbon dioxide.

Answer 4

Burning fossil fuels for energy production, deforestation leading to the loss of carbon-sequestering trees, and intensive agriculture practices releasing carbon stored in soils are all ways human activities add carbon to the atmosphere.