Starter quiz
- Which of the following are examples of conservation?
- gene banks ✓
- deforestation
- urbanisation
- nature reserves ✓
- quarrying
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- The destruction of habitats through deforestation causes...
- an increase in biodiversity.
- no change in biodiversity.
- a reduction in biodiversity. ✓
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Eutrophication reduces biodiversity in aquatic habitats when...- farmers use too much fertiliser and this washes into ponds and rivers. ✓
- farmers use too much pesticide on their crops which wash into ponds and rivers.
- farmers do not use enough fertiliser and it doesn't get into ponds and rivers.
- farmers use organic methods to grow crops.
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- A species which is naturally found in an area is called a ______ species.
- 'native' ✓
- Why might a population of an invasive species grow quickly?
- Invasive species are native to an area.
- Invasive species are prey to many animals.
- Invasive species have no natural predators in the area. ✓
- Invasive species eat all other species.
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- What are reasons why species become endangered?
- habitat protection, introduced species and climate change
- deforestation, pollution and seed banks
- urbanisation, quarrying and captive breeding programmes
- habitat destruction, humans hunting animals for food and introduced species ✓
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Exit quiz
- Why might a species become extinct as a result of climate change?
- The species may adapt too quickly to warmer temperatures.
- The species may adapt too quickly to cooler temperatures.
- The species may adapt too slowly to warmer temperatures. ✓
- They migrate to other habitats where they are well adapted.
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- What does the term 'distribution of a species' mean?
- how many individuals of a species there are
- where a species is found ✓
- how species rely on each other
- the conditions that a species is adapted to live in
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- Why is climate change causing sea levels to rise?
- There are more droughts.
- There is melting of glacial ice. ✓
- There is increased rainfall/precipitation.
- Plants are taking up less water from the soil.
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- Which of the following is not a main factor that affects the distribution of organisms?
- temperature
- levels of atmospheric gases
- availability of water
- increased number of predators ✓
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A species of plant is found in mountains at altitudes between 800 m and 1000 m where the temperature is colder. What will happen to the species of plant as the Earth's temperature increases?- The plant will be found at higher altitudes where the temperature is colder. ✓
- The plant will be found at lower altitudes where the temperature is warmer.
- The plant will remain between the same altitude range.
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What trends or patterns are shown in the graph of the population of wildebeest from 1990-2010?- The number of wildebeest is increasing.
- The number of wildebeest is declining. ✓
- The wildebeest live in habitats where there is lots of rainfall.
- Droughts have been occurring more frequently. ✓
- The number of wildebeest predators have increased.
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Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Increasing amounts of greenhouse gases in the atmosphere are associated with climate change.
- Changes in ecosystems can affect mean temperature and water availability.
- Changes in ecosystems can leave organisms less well adapted to survive and thrive there.
- Evaluation of data linking changes in atmospheric gases and changes in biodiversity.
- Evaluation of data linking changes in water availability and changes in biodiversity.
Common misconception
A common misconception is that a small increase in greenhouse gases and a small rise in Earth's temperature will not have much impact on organisms on Earth beyond land ice melting.
The lesson discusses how small changes in weather patterns can have a significant impact on organisms as their habitats change and no longer provide them with food, shelter and a place to reproduce.
Keywords
Greenhouse gas - a gas responsible for the greenhouse effect by absorbing and re-radiating infrared radiation that warms the atmosphere
Climate change - a long-term shift in weather patterns
Distribution - where species are located
Abundance - how many individuals of a species are present
Biodiversity - the range of different living organisms (species) that live in a place
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