
Name two ways that carbon (usually in the form of CO2) enters the atmosphere.

Process D on the diagrm uses CO2 from the atmosphere. Identify the process labeled D.
What oranisms carry out the process labeled D?
Wastes and dead organisms must be broken down in order for their components to be used again. What organisms carry out decomposition?
What would happen if decomposition did not occur?
Not all dead organisms are acted on by decomposers. Instead of being immediately recycled, the carbon from some organisms is kept in a type of long-term storage or carbon sink. Click on 3 materials that are carbon sinks.
Cellular respiration, decomposition, combustion, and photosynthesis are processes that drive which of the following cycles?
Leaves fall from trees in autumn. The carbon in these leaves is returned to the atmosphere through which of the following processes?
What process is happening here? The factory is burning fossil fuels releasing carbon into the atmosphere.
What process is happening here? The lynx is breathing out carbon dioxide?
What process is happening here? The tree is removing carbon dioxide from the atmosphere. During this process the tree makes sugar.
What gas is made during photosynthesis? This gas is breathed in by the lynx.
Carbon cycles through all of the following except
Burning fossil fuels is known as
Which of the following are mainly cycled through the processes of photosynthesis and cellular respiration?
The diagram shows part of the carbon cycle. Which of the processes shown in the diagram is responsible for cycling carbon from the atmosphere to the biosphere (living things)
