Decay and Decomposers 0.0 / 5 ? BiologyDecompositionGCSEAQA Created by: Daniella_72Created on: 19-02-23 11:58 what do decomposers do? -break down waste materials -they return carbon dioxide back to the atmosphere and mineral ions back to the soil 1 of 8 what is an example of a decomposer? certain types of bacteria and fungi 2 of 8 what are the conditions needed for decomposition? -oxygen -moister -suitable temperature -suitable pH 3 of 8 how do decomposers break down waste? -they secrete enzymes that partly digest the waste -they then take up the small soluble food molecules 4 of 8 how do gardeners use decomposition and why? -gardeners try to provide optimum conditions in compost heaps -once decayed compost can be used as a natural fertilizer for plants 5 of 8 how does the food industry preserve food (stop it from decaying)? they remove/alter one of the factors needed for decay 6 of 8 what is produced when waste is decomposed anaerobically? methane 7 of 8 how can the products of anaerobically decomposed waste be used? bio gas generators can be used to produce bio gas from waste which is used for fuel 8 of 8
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