SB9j The water cycle Step Learning outcome Had a look Nearly there Nailed it! Give examples of materials that cycle through ecosystems. Describe the processes by which water cycles through abiotic parts of an ecosystem. Describe the processes by which water cycles through living organisms. Describe how drinking water is produced where water is plentiful. Explain how drinking water can be produced by desalination in areas of drought. Explain why water is important to living organisms. SB9k The carbon cycle Step Learning outcome Had a look Nearly there Nailed it! Give examples of decomposers. Define the term decomposer. Describe the carbon cycle. Identify the key processes in the carbon cycle. Explain how carbon is cycled through the biotic and abiotic components of an ecosystem. Explain the importance of the carbon (in balancing photosynthesis and respiration, and removal of wastes by decomposition). SB9l The nitrogen Step Learning outcome Had a look Nearly there Nailed it! Describe how plants use nitrates. Describe the different roles of bacteria in the nitrogen cycle. Explain how fertilisers increase the nitrate content of the soil. Explain why bacteria are important for soil fertility. Explain how crop rotation can increase the nitrogen content of the soil.
SB9j The water cycle Step Learning outcome Had a look Nearly there Nailed it! Give examples of materials that cycle through ecosystems. Describe the processes by which water cycles through abiotic parts of an ecosystem. Describe the processes by which water cycles through living organisms. Describe how drinking water is produced where water is plentiful. Explain how drinking water can be produced by desalination in areas of drought. Explain why water is important to living organisms. SB9k The carbon cycle Step Learning outcome Had a look Nearly there Nailed it! Give examples of decomposers. Define the term decomposer. Describe the carbon cycle. Identify the key processes in the carbon cycle. Explain how carbon is cycled through the biotic and abiotic components of an ecosystem. Explain the importance of the carbon (in balancing photosynthesis and respiration, and removal of wastes by decomposition). SB9l The nitrogen Step Learning outcome Had a look Nearly there Nailed it! Describe how plants use nitrates. Describe the different roles of bacteria in the nitrogen cycle. Explain how fertilisers increase the nitrate content of the soil. Explain why bacteria are important for soil fertility. Explain how crop rotation can increase the nitrogen content of the soil.
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