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Starter:. Read the passage and then summarise what you have read – write the summary into your book. Today’s objectives understand reasons why species can become extinct explain why scientists must think carefully before introducing non-native species into habitats. Extinction. Extinction. - PowerPoint PPT Presentation
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Starter: Read the passage and then summarise what
you have read – write the summary into your book.
EXTINCTIONToday’s objectives•understand reasons why species can become
extinct•explain why scientists must think carefully before introducing non-native species into
habitats
Extinction What is the definition of extinction?
What causes extinction? Write down an example of a plant or
animal under threat and the reasons why it could be at risk of extinction.
What are the differences between native and non-native species? Where do Kangaroos live?
Are rabbits native to Australia?
Native Species = Species that originate in the region or ecosystem
Non native species = Species that do not originate in the region or ecosystem
Justin Bieber vs
One direction
What did you find out for your homework? Anyone willing to share their work?
What examples are there of non-native species (alien species)?
Which one is native to the UK?
Task... Read the blue section in the text book
p76-77 and answer question 3 and 4:
3: explain why species might become extinct due to the introduction of another species.
4: why have Cane toads been so successful in Australia?
Why have Cane toads been so successful in Australia?
Introduced to kill beetles in 1930’sGood idea… NOT!
Populations over 200m Secretes poisons to predatorsTaking over native wildlife
You are in charge of biological issues for the UK. They ask you to introduce a non native species of eagles to bring down grey squirrel populations. Should you do it?Explain using some to the words.
HabitatEnvironmentAdaptationCompetitionInterdependenceExtinctionNativeNon-native
