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The
Environment - How can you help protect it?
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Our planet is in trouble!
Almost every day we seem to hear of yet another problem
affecting the environment - and what a list of problems!
- pollution, acid rain, global warming, the destruction
of rainforests and other wild habitats, the decline and
extinction of thousands of species of animals and plants....and
so on.
Nowadays, most of us know
that these threats exist and that humans have caused them.
Many of us are very worried about the future of our planet
and unless we can find a way of solving the problems we
have made then the environment will suffer even more.
It all sounds so depressing
- but we certainly mustn't despair! Every one of us, whatever
age we are, can do something to help slow down and reverse
some of the damage. We cannot leave the problem-solving
entirely to the experts - we all have a responsibility for
our environment. We must learn to live in a sustainable
way i.e. learn to use our natural resources which include
air, freshwater, forests, wildlife, farmland and seas without
damaging them. As populations expand and lifestyles change,
we must keep the World in good condition so that future
generations will have the same natural resources that we
have.
Here are just a few examples
of the threats to our environment and some ideas to help
you to do something about them.
Waste
We humans create such a lot
of rubbish! Each household in Britain produces about 1 tonne
of rubbish every year! Most of this is taken away by dustmen
and buried in enormous landfill sites or burned in incinerators
- both of these actions can be dangerous for the environment.
Is all our rubbish really rubbish? If you think about it,
much of what we throw away could be used again. It makes
sense to recycle and not just to solve the problemof where
to put the rubbish. Much of our waste is made up of glass,
metal, plastic and paper. Our natural resources such as
trees, oil, coal and aluminium are used up in enormous amounts
to make these products and the resources will one day be
compl etely used up. We must cut down on energy use.
Ideas to Help
- Sort out your rubbish.
Organic matter e.g. potato peelings, left over food, tea
leaves etc. can be transferred straight to a compost heap
in the garde and used as a good, natural fertiliser for
the plants. Aluminium cans, glass bottles and newspapers
etc. can be taken to bottle and can banks and wastepaper
skips. Find out where they are by asking your local council
or library.
- Use recycled paper to help
save trees. Everyone in Britain uses about 6 trees
worth of paper every year.
Chlorine bleach is usually used to make newspapers and
this pollutes rivers. Its better to use unbleached, recycled
paper whenever you can.
- Take your old clothes to charity
shops. Some are sold, others are returned to textile
mills for recycling.
- Try to avoid buying plastic.
It's hard to recycle. One way to cut down on plastic is
to refuse to use carrier bags
offered by supermarkets and use strong, long lasting shopping
bags instead, or re-use plastic bags over and over again,
until they wear out.
- Don't buy over-packed goods.
Many things we buy have unnecessary amounts of plastic
and paper around them.
Rainforests
Rainforests are valuable habitats. About
half of all the species of animals and plants in the world
live in rainforests. Thousands of rainforest plants contain
substances that can be used in medicines and the tribal
people of the forests have great knowledge of them. Rainforests
are being cut down to make way for 'civilised man', to grow
crops and graze cattle, and provide timber. An area almost
the size of Britain is burnt every year. Rainforests help
to regulate the world's climate and atmosphere.
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Never buy
products made up of tropical hardwoods e.g. mahogany
and teak. It is better to buy only pine, oak,
ash or beech because they can be replaced.
-
Garden
and flower shops sometimes sell
rainforest orchids that have been imported. If
you buy an orchid, check that it has been grown
in Britain.
-
Some parrots
and macaws are unfortunately still
imported. If you want a parrot as a pet, make
sure it has been hatched in Britain.
-
Eating
a beefburger may be helping to destroy
the rainforest! Most burgers in Britain are made
from European cattle. However, the cattle are
often fed on soya bean and a lot of that comes
from Brazil where large areas of forest have been
destroyed to make soya fields. Before buying a
burger, ask where the cattle came from and what
they were fed on. Try a veggie burger for a change!
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Pollution
The air, water and soil of
habitats all over the world have been, and are still being,polluted
in many different ways. This pollution affects the health
of living things. Air is damaged by car and lorry fumes,
and power stations create acid rain which destroys entire
forests and lakes. When fossil fuels i.e. oil, gas and coal
are burned to provide energy for lighting, cooking etc.
they form polluting gases.
Oils spills pollute sea
water and kill marine life; chemical waste from factories
and sewage works, and artificial fertilisers from farmland,
pollute river water, killing wildlife and spreading disease.
The careless or deliberate
dumping of litter in the environment is not only unsightly
but dangerous too.
Ideas to Help
- Use less energy
by switching off lights when rooms are not in use, not
wasting hot water, not overheating rooms and not boiling
more water than necessary when making a cup of tea!
- Use a bicycle
or walk instead of using a car for short trips.
- If you spot pollution,
such as oil on the beach, report it to the local council.
If you suspect a stream is polluted,
report it to the local Environmental Health Officer
- If you use chlorine-based
bleach or detergents containing phosphates you are contributing
to water pollution.
Try to buy 'environmentally-friendly' products.
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The Ozone Layer
Fifteen to thirty miles above the Earth
lies the stratosphere, a broad band of gases and one of
these gases is ozone. It's only a small part of the stratosphere
but very important because it prevents too many of the sun's
ultra violet rays from reaching us. Too many ultra violet
rays can give us skin cancer and destroy plankton, the important
microscopic life in the sea. In the 1980s it was discovered
that 'holes' were appearing in the ozone layer above the
Antarctic and Arctic. CFCs, chlorofluorocarbons, gases used
in the manufacture of aerosols and fridges, are believed
to be responsible for destroying the ozone layer.
Ideas to Help
- Don't buy aerosols containing
CFCs. Actually, it's not a good idea to buy any aerosols.
Even 'ozone friendly' aerosols may contain harmful chemicals
and spray cans are difficult to dispose of - they cannot
be recycled. Pump-action sprays are a much better alternative.
- A lot of packaging e.g. fast-food
cartons, are polystyrene 'blown' with CFCs. Try to avoid
items packed with this
polystyrene.
- If you know of anyone getting
rid of an old fridge, tell them that the CFCs can be drained
out and recycled -
contact the local council and they will dispose of the
fridge safely. New fridges can be bought with less CFCs
in them.
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Certain gases in the atmosphere,
mainly carbon dioxide, methane and CFCs, act like
the glass in a greenhouse, allowing sunlight through
to heat the Earth's surface but trapping some of
the heat as it radiates back into space. Without
this the Earth would be frozen and lifeless. However,
owing to Man's activities,'greenhouse gases' are
building up in the atmosphere, causing a greater
amount of heat to be reflected back to Earth. The
result is an increase in average world temperatures
and in the future this could lead to the flooding
of cities world wide and more hurricanes etc.
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Ideas to Help
- Don't waste electricity. Electricity
is produced by burning coal, oil and gas and this action
gives off carbon dioxide.
- Car fumes produce carbon dioxide and
nitrogen oxide - so try to cut down on car journeys if
possible. Use a bike
or walk - it's good exercise for you too!
- Recycle as much of your waste as you
can. Methane, the most effective 'greenhouse gas', is
released into the
air as the rubbish in landfill sites rots.
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Endangered Habitats
and their Wildlife
Wild habitats all over the
world are fast disappearing. Forests are being cut down,
rivers and seas polluted, heathlands built on, hedgerows
pulled up, ponds filled in - the destruction seems endless.
As the habitats decrease, so do their communities of animals
and plants. Habitat destruction is one of the main reasons
why many species face extinction. Other reasons include
the hunting of animals and collection of plants.
There are now more than 5,
000 species of animal and about 25,000 species of plants
threatened with extinction. During the last 200 years more
than 200 species of mammals and birds have become extinct
i.e. disappeared from the earth forever. It is possible
that we are losing one species of animal or plant every
day!
Ideas to Help
- In many countries souvenirs made
from rare wildlife are available - never buy shells, coral
or things made from elephant ivory, rhino horn or cat
skin etc.
- Remember that British habitats
and wildlife are under threat too. The destruction of
wood land, pollution of rivers
and ponds, the use of pesticides and herbicides have all
contributed to the reduction in the amount of wildlife
in Britain. Many animals and plants are endangered e.g.
red squirrels, otters, barn owls, golden eagles, natterjack
toads, many species of butterflies and dragonflies, orchids
- to name just a few. If you have a garden at home, you
could transform it into a mini nature reserve for wildlife.
The same could be done in your school grounds. Here are
just a few ideas to create a wildlife garden:-
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- Make a pond. Even A small pond will
attract frogs and toads etc.. Birds and foxes may use
it for drinking.
- Make a wildflower meadow. Wildflower
plants and seeds may be bought from garden suppliers and,
if planted correctly, a colourful meadow will result,
attracting birds, butterflies and other insects.
- Provide logs and stones and allow a
few autumn leaves to remain lying around. These provide
shelter for minibeasts and perhaps small mammals such
as shrews and mice. An over-neat garden will not be attractive
to wildlife.
- Feed the birds during winter and put
up nest boxes for robins and blue tits etc. to use in
spring.
- If your garden is big enough, you could
plant a small wood. Always grow native trees such as oak,
ash or birch - these attract more insects than foreign
trees.
- Hedgehogs are useful to have in the
garden as they eat slugs. Encourage them to stay by providing
them with tinned cat or dog meat, water and a safe place
to hibernate in winter, such as a pile of logs, stuffed
with hay and leaves.
- Avoid using chemical sprays in the
garden - some of these can be poisonous to wildlife. It's
best to let the birds eat the cabbage-munching caterpillars,
the hedgehogs and toads deal with the lettuce-loving slugs
and the ladybirds dine on the rose-ravaging greenfly!
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