carbon cycle

What element is present in all living things?

• water

• carbon

• helium

• methane

When humans burn fossil fuels, most of the carbon quickly enters the_____________ as carbon dioxide.

• Water

• Atmosphere

• Sun

• Land

How does the carbon in grass become part of a carnivorous lion?

• The lion eats the grass

• Carbon from grass doesn't end up in a lion.

• The carbon ends up in the lion's food chain.

• The lion breathes in carbon given out by the plant

Carbon and gases that contain carbon can be found ...?

• in the atmosphere

• inside the Earth

• in fossil fuels

• All of the above!

Carbon dioxide is produced by the burning of fossil fuels

• True
• False

Fossil fuels come from the remains of the organism that lived

• Months ago

• Few years ago

• Million years ago

• Few decays

Natural gas consist of mainly of gaseous compounds called 

• Ehthene
• Methane
• Carbon 
• Nitrogen 

Fossil Fuels are also be known as 

• Renewable resources
• Non Renewable resources 

In the carbon cycle, producers take in the gas __

• carbon dioxide
• oxygen
• nitrogen
• carbon monoxide

Humans and animals release carbon dioxide into the air during photosynthesis  

• True                     
•  False