Energy, initially provided by the sun, and matter are transferred and transformed through ecosystems. The amount of matter or energy assimilated by organisms is referred to as productivity.
The carbon and nitrogen cycles are examples of nutrient flow through an ecosystem.
|1||Energy flow through an ecosystem|
|3||The carbon cycle|
|4||The nitrogen cycle|
- Construct a quantitative model (using spreadsheet software) of the transfer of energy or matter through a given system.
- Measure the productivity in an aquatic ecosystem using the bottle method.
“Evaluate the diagram as a model for the carbon cycle.” [9 marks]
The essay should marked using the Paper 2, Section B essay markbands.