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Through

the

changes＇in

the

ways

Of

making

a

living

in

a

family

over

several

gen,erations,

man

has

been

warned

against

waste

of

natural

resources

and

读书人作文网()

emphasizing

the

urgent

need

to

preserve

these

resources.

Ever

since

man

appeared

on

the

earth,

man＇s

survival

has

been

heavily

relied

on

nature.

Almost

everything

we

use

in

our

everyday

life

comes

fromm＇notate,

ranging

from

the

food

we

eat,

the

water

we

drink,

to

the

wood

which

is

tm＇ned

into

furniture.With

the

development

of

technology

and

population

growth,

the

amount

and

range

of

materials

used

has

increased

at

an

alarming

rate.However,

natural

resources

are

not

inexhaustible.

Some

reserves

are

already

on

the

brink

of

exhaustion

and

there

is

no

hope

of

replacing

them.

The

widespread

water

shortage

is

an

example

in

point.

If

man

continued

to

squander

natural

resources

with

no

thought

for

the

future,

the

later

generations

would

be

in

danger.

It

is

up

to

us

to

take

effective

measures

before

the

situation

gets

out

of

hand.

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