Round three's answers. Coal, oil and natural gas are the three main fuels, the tongue is often cited as the strongest muscle, and plants absorb carbon dioxide.
Graphite is a form of carbon, and the study of plants is botany.
- Coal, oil and natural gas
- The tongue
- Carbon Dioxide
- Carbon
- Botany
- In the leg
- A fungus
- Christopher Cockerell
- Eucalyptus trees
- In the bone marrow
- Copper and tin
- Alexander Graham Bell
- Cider
- The Aorta
- The oak tree