Question

carbon dioxide is a type of fossil fuel.
burning fossil fuels releases harmful pollutants into the air.
carbon dioxide emissions from fossil fuels are a main cause of climate change.

Explanation:

To determine the incorrect statement, we analyze each:

• "Burning fossil fuels releases harmful pollutants into the air" is correct (e.g., $CO_2$, $SO_2$).
• "Carbon dioxide emissions from fossil fuels are a main cause of climate change" is correct (greenhouse effect).
• "Carbon dioxide is a type of fossil fuel" is incorrect. Fossil fuels (coal, oil, gas) are carbon - based fuels; $CO_2$ is a by - product of burning them, not a fossil fuel.

Answer:

The incorrect statement is "Carbon dioxide is a type of fossil fuel."