Managing Ecosystems 0.0 / 5 ? BiologyGCSEOCR Created by: Hayley GoddardCreated on: 14-05-13 20:22 What do ecosystems provide us with? Clean air, water and food 1 of 17 What else do ecosystems provide us with that is needed to produce crops? Fertile soil that's full of mineral nutrients 2 of 17 What does most crop production need? Pollination 3 of 17 What is pollination? The transfer of pollen grains between plants so they can be fertilised 4 of 17 What can carry out pollination? Organisms (e.g. bees) and wind 5 of 17 What does sustainability mean? Meeting the needs of today's population without harming the environment so that future generations can still meet their own needs 6 of 17 What is one way sustainability can be achieved? Using natural resources at a rate at which they can be replaced naturally 7 of 17 Why have fishing quotas been introduced? To prevent some types of fish from becoming extinct in certain areas due to overfishing. 8 of 17 What are laws insisting logging companies to do? Replace trees that have been cut down 9 of 17 Why is the Sun's energy sustainable? It can't be used up by human activities 10 of 17 Sunlight is used in natural ecosystems. Why? To make food by photosynthesis 11 of 17 How is the Sun's energy used? Its initially stored in the form of carbohydrates and the energy is transferred between organisms between organisms when they're eaten 12 of 17 How else can sunlight be used as a sustainable source of energy? Sustainable agriculture 13 of 17 What does sustainable agriculture aim to do? To meet the food needs of today's population without preventing future generations from meeting their own needs 14 of 17 How else can sunlight be used within sustainable agriculture? Power equipment 15 of 17 What do communities soetimes have to choose between? Causing damage to an ecosystem to get the resources from it OR protecting an ecosystem but getting fewer resources from it 16 of 17 What does this cause? And why? Tensions - people have to decide if it's worth increasing food production, at the risk of damaging an ecosystem 17 of 17
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