64
65
In addition, the use of
machinery
on
farms
contributes to environmental
destruction.
Machines
allow
larger areas to be cultivated, thus leading to loss
of the
habitat
in
which
wildlife
lives.
For
example,
in
England,
the increasing use 45
of
machines
has
made
it easy for
farmers
to
remove
the
hedges
that used to
separate
fields.
Thus
many
species of butterfly are
now
facing
extinction
because
they have'
nowhere
to
live
and
breed.
In
Australia,
over-use of the land by
machines
has resulted in
many
farms
becoming
like
deserts.
Furthermore,
the energythat agricultural
machines
use is
mostly
produced
from
50
the
burning
of diesel,
which
causes pollution as
well
as
adding
to global
warming.
Electricity that is sometimes used to
power
farm
machinery
is also
usually
produced
in environmentally
unsound
ways.
In
summary,
there are
many
disadvantagesto the mechanisation of agriculture
as
well
as advantages.
With
the increasing population of the
world,
most 55
governments consider that expanding mecnanisation is the only
way
to feed the
additional
hungry
mouths.
However,
it
would
be sensible for governments to
take steps to
minimise
the disadvantages of this
process.
Developed
countriesexperienced these disadvantages sometime ago, and
while
many
ofthem
have
been
overcome,
a significant
number
of mistakes
we~e
made.
60
It
would
be
wise
for countries currently
undergoing
mechanisation to study
these
mistakes
carefully and to
avoid
making
the same ones themselves.
UNIT3
science
and
technology
facing
extinction
there
are
very
fewof
those
animals
still
living,
and
soon
there
might
be
none
of
them
Reading and
Writing
Avoiding
the
repetition
of
words
It is useful to use a thesaurus
when
writing
an
essay.
Using
one
will
also
help
you
learn
new
lexis
(words)!
.
Look
at the
essay
The
mechanisation
of
agriculture
on the
previous
page.
Use
the
paragraph
numbers
given
in the table
below
to
find
in the
essay
the
synonyms
of
the
words
given.
The
first one has
been
done
for
you.
Each
answer
may
consistof
more
than one
word.
LEARNING
tip
Repeated
words
in
essays
make
an
essay
boring
to
read.
To
produce
a
good
style in
writing,
it is importantto repeat as
few
words
as
possible.
To
dothis,
you
need
to use
synonyms.
Synonyms
are
words
that
have
the
same
meaning.
You
can use a thesaurus to
find
synonyms.
Task A: Identifying
synonyms;
vocabulary
development;
understanding
lexical cohesion
,unsound
bad
or
negative
habitat
the
trees,
plants,
rivers
etc
where
that
animal
usually
lives
5
15
20
10
ENGLISH
FOR
ACAOEMIC
PURPOSES
si
u
den
I s '
boo
k
One
of these
problems
is that the
unemployed
of the countryside have to go
elsewhere
to
find
work-the
obvious
places
to
look.
are the
larger
cities,
where
further
problems
occur.
Thus
the increasing use of
machinery
leads to an
explosion
in
urban
population.
Because
the people
moving
to the cities are 35
usually
poor,
this causes
problems
of sub-standard
housing
(resulting in
slums),
transport
problems
and
urban
poverty,
as there are not necessarily
more
jobs
available in the city than there
were
in the countryside.
Also,
the
movement
of
people to the cities often
means
that
families
are spilt up, and villages
which
were
once strong communities
become
too small to support essential services 40
such as post offices and
public
transport.
This
leads to the irreversible
break-
up of these communities as
people
move
to the cities.
Despite
these
highly
positive results of mechanisation, there are also several
negative factors that aren't
always
considered bythe
~ro~onents
of this
process.
One
of the mostimportant ofthese is
employment.
As
in all other
fields
of
life,
25
the increasing use of
machines
inevitably
results in the
same
job
being
done by
fewer
people.
It can be
argued
that
some
jobs are created in designing and
maintaining the
machines,
but almost
always
more
jobs are lost than created,
and in addition the
people
whose
jobs are lost oftendo not
have
the
skills
to
undertake the
newly
created jobs.
Therefore
many
jobs
have
to go, leading to a 30
variety of social
problems
in rural communities.
Increased use of
farm
machinery
has
also
generally
ledto a
decrease
in costs.
This
may
seem
surprising
when
the
considerable
cost ofinitial
purchase
of equipment
is
considered
(this
may
be tens of thousands of
dollars
for a tractor, or
hundreds
of thousands of
dollars
for a
large
piece
of equipment
like
a
combine
harvester).
However,
a tractor enables one
person
to
perform
so
much
more
work
that the
extra
profit,
made
from
having
more
crop
to sell,
more
than
covers
the
purchase
and
running
costs of the tractor.
Through
similar
savings
using
other
pieces
of
equipment, costs per hectare of
food
production
have
fallen
significantly.
The
vast increase in
out~ut
that has
been
made
possible by
more
use of
mechanisation is
probably
the most important positive effect of this
process.
The
speed of planting
crops,
spreading fertilisers and pesticides, and
harvesting, is
~henomenal.
All
three of these processes
contribute
to
equally
enormous
increasesin production.
Mechanisation
has
improved
food
production
during
this century and has
helped
to feed the larger
world
population.
The
mechanisation of agriculture and
its
effect
on quality of
life
/,' ..
IMajor
developments
have
t~ken
place in
th~
field
of aqriculture
during
:he lastl
"
[century,
one of the most Important of
whlCh
has
been
the
mtroductlOn
and
lextensive
use of
ma5J1ineryJThis
has hacrgreat effects on the environment and
on the
lives
of
millions
of people
around
the
world.
For
the
purposes
of this
essay,
we
will
take the mechanisation of agriculture to
mean
the use of any
device
that is
powered
by anything other than
humans
or
animals,
on a
farm.
Careful
consideration of
some
of the effects of agricultural mechanisation, both
positive and negative, is essential for any country currently experiencing an
increase in the use of
such
machines.
inevitably
this
always
happens
~ro~onenls
people
who
support
the
idea
mentioned
(in
this
case,
agricultural
mechanisation)
General
statement
contribute
assistor
help
extensive
used
a lot
~henomenal
surprisingly
more
than
expected,
impressive
out~ut
thethingsthat
are
made
,slums
city'
areas
of
verylow quality
housing,
without
normal
services
-
such
as
a
reliable
water
supply
I