What would be the effect on carbon cycling if there were no decomposers present in an ecosystem?

Name the four geological reservoirs (sinks), in the diagram above, that can act as a source of carbon:

Describe the biological origin of the following geological deposits:
(a) Coal
(b) Oil
(c) Limestone

Explain why farmers may plow a crop of legumes into the ground rather than harvest it.

Predict the consequences to carbon cycling if there were no decomposers present in an ecosystem.

Explain why Surtsey provided ideal conditions for studying primary succession:

(a) Name the processes that release carbon into the atmosphere: (b) In what form is the carbon released?

(a) In what form is carbon found in the atmosphere? _____ (b) In what three important molecules is carbon found in living systems? _____ (c) In what two forms is carbon found in rocks? _____

Why do you think it is important that matter is cycled through an ecosystem?

Name the four geological reservoirs (sinks), in the diagram above, that can act as a source of carbon:

Explain why models of climate change are constantly revised:

Explain the role of organisms in the carbon cycle.

(a) Explain the role of methanogenic (methane producing) archaea in the carbon cycle: (b) Suggest another biological source of methane:

Describe the biological origin of the following geological deposits: (a) Coal: (b) Oil: (c) Limestone: (d) Peat: