Managing Ecosystems

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What do ecosystems provide us with?
Clean air, water and food
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What else do ecosystems provide us with that is needed to produce crops?
Fertile soil that's full of mineral nutrients
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What does most crop production need?
Pollination
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What is pollination?
The transfer of pollen grains between plants so they can be fertilised
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What can carry out pollination?
Organisms (e.g. bees) and wind
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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
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What is one way sustainability can be achieved?
Using natural resources at a rate at which they can be replaced naturally
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Why have fishing quotas been introduced?
To prevent some types of fish from becoming extinct in certain areas due to overfishing.
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What are laws insisting logging companies to do?
Replace trees that have been cut down
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Why is the Sun's energy sustainable?
It can't be used up by human activities
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Sunlight is used in natural ecosystems. Why?
To make food by photosynthesis
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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
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How else can sunlight be used as a sustainable source of energy?
Sustainable agriculture
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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
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How else can sunlight be used within sustainable agriculture?
Power equipment
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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
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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
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Other cards in this set

Card 2

Front

What else do ecosystems provide us with that is needed to produce crops?

Back

Fertile soil that's full of mineral nutrients

Card 3

Front

What does most crop production need?

Back

Preview of the front of card 3

Card 4

Front

What is pollination?

Back

Preview of the front of card 4

Card 5

Front

What can carry out pollination?

Back

Preview of the front of card 5
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