B2g-h

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  • Created by: notae003
  • Created on: 17-05-15 09:43
Name one thing increased human population leads to.
Increased use of fossil fuels.
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What is the ozone layer?
A layer of the Earth's atmosphere that protects us from the Sun's UV rays.
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What damages the ozone layer?
CFC's.
3 of 15
What is sulfur dioxide dangerous?
Because it dissolves in rain making it acidic, killing trees, polluting lakes and causing fish to die.
4 of 15
What does 'carbon footprint' mean?
The amount of carbon dioxide (greenhouse gases) produced by a person in a certain period of time e.g. a year.
5 of 15
What are indicator species?
Species that are used to estimate levels of pollution in an area.
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Name two ways that pollution in water can be measured.
Chemical testing and oxygen/pH probes.
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Give 5 reasons what animals may become extinct.
Climate change, habitat destruction, hunting, pollution and competition.
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Give 6 ways that endangered species can be protected.
Protecting habitats, legal protection, education programmes, captive breeding programmes, seed banks and artificial ecosystems.
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What is sustainable development?
Providing for the needs of today's increasing population without harming the environment.
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Why is the human population rising exponentially?
The birth rate is increasing, but the rate at which it is increasing is also increasing.
11 of 15
Give two advantages of using living methods (indicator species) to measure pollution.
1) No expensive equipment needed. 2) Very simple/easy way of saying whether an area is polluted.
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Give a disadvantage of living methods (indicator species) to measure pollution.
Factors other than pollution can influence the survival of indicator species (so they aren't reliable).
13 of 15
Give two advantages of non-living methods to measure pollution.
1) It gives reliable, numerical data that is easy to compare. 2) The exact pollutants can be identified.
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Give a disadvantage of non-living methods to measure pollution.
Often more expensive equipment is required and trained workers are needed.
15 of 15

Other cards in this set

Card 2

Front

What is the ozone layer?

Back

A layer of the Earth's atmosphere that protects us from the Sun's UV rays.

Card 3

Front

What damages the ozone layer?

Back

Preview of the front of card 3

Card 4

Front

What is sulfur dioxide dangerous?

Back

Preview of the front of card 4

Card 5

Front

What does 'carbon footprint' mean?

Back

Preview of the front of card 5
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