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(共38张PPT)
Unit 1 Nature in the balance
Integrated skills
Calling for the protection of animals
Learning objectives
>Figure out how human activities have caused harm to
animals
>Be aware of the importance of animals
>Come up with ways to protect animals
>Make a poster to call on people around to protect animals
The Amazon
rainforest
Quick Quiz:1 Where do you think those animals live together
2.What roles do you think animals can play in the Amazon rainforest
As part of the Amazon rainforest,animals help maintain
the fine balance of the Earth's ecosystem
3.What are the impacts of human activities on those significant animals
An increasing number of animals have become extinct
due to
human activities
Tell me why
To our common mother(earth)
We animals
along with you humans
play the same role in maintaining the
balance of the ecosystem.
Why do you humans hunt
us to extinction
Reading
Reading and understanding
Why do you humans hunt us to extinction
Human activities cause
Hunting and fishing have directly influenced the world's animal populations.
Some people hunt animals for food:whale meat is eaten
increasing harm to animals
in some parts of the world.Some people hunt animals for
fashion:animal skin is used to make coats and bags.Still
When you think ofa fearsome hunter,images of lions and sharks may springto
others hunt animals just for fun:deer are tracked and
mind.Recent research bymental scientists,however,shows that in fact.
shot by people who enjoy the excitement of the sport.
humans are the most fearsome hunters who have the greatest impact on animal
Human activities that have indirect effects on animals can be just as harmful.
populations.Human ctivities have brought many animals osetoxi
When we build farms or factories,we destroy animal habitats and leave many
animals with nowhere to live,or no food to eat.We can also put animals in danger
the last 500vears,over 3 species of nimals have gone extinct.Someactivities
without ever entering their habitats.Air,water,noise and light pollution can all
such shuntingand fishing,directly harmnmas,while otheractivities,such s
have a deep and damaging influence quite far from their source.Partly due to
development in towns and cties,impact indireton nimal popuaons.
pollution caused by ship traffic and other human activities,the dolphin population
has dropped greatly.As the human population connestoowsooes theeffect
we have on animals.

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