Question

carbon circulates from the atmosphere and into the biosphere. below are listed the steps of a carbon molecule from the atmosphere all through the biosphere and then back to the atmosphere. number the steps so that they are in the correct order.

sequence steps of a carbon molecule
grass converts co₂ using water and sunlight into glucose via photosynthesis
co₂ is exhaled by the cow
carbon molecule enters the grass in the form of co₂
glucose is stored in the grass
co₂ is now in the atmosphere again
glucose is broken down into co₂ and water
carbon molecule is in the atmosphere
a cow eats the grass and uses the glucose as energy

Explanation:

The carbon cycle starts with carbon in the atmosphere. Then it enters plants (grass) as \(CO_2\) which is converted to glucose via photosynthesis and stored. The plant (grass) is eaten by an animal (cow) which uses the glucose. The glucose is broken down (respiration) into \(CO_2\) and water. The \(CO_2\) is exhaled back into the atmosphere.

Answer:

1. Carbon molecule is in the atmosphere
2. Carbon molecule enters the grass in the form of \(CO_2\)
3. Grass converts \(CO_2\) using water and sunlight into glucose via photosynthesis
4. Glucose is stored in the grass
5. A cow eats the grass and uses the glucose as energy
6. Glucose is broken down into \(CO_2\) and water
7. \(CO_2\) is exhaled by the cow
8. \(CO_2\) is now in the atmosphere again