The quality of human life has improved greatly over the past few centuries, but Earth is being
: A8 P+ d) ?, G+ m' tharmed more and more by human activity. As we develop our technology, we demand more from our planet. Eventually, this will harm people as well.
% ^9 G3 v; T, \' ?( G* c2 S) r4 kOur planet gives us everything we need, but natural resources are not endless. Strip mining : y1 g, U/ {! m* P2 o, b. h
devastates whole regions, leaving bare and useless ground. Deforestation removes old growth
! C' T/ K; g2 a7 a! ^2 q" Ztrees that can’t be replaced. Too much fishing may harm fish populations to the point where they o1 ]! n9 k q
The quality of human life has improved greatly over the past few centuries, but Earth is being
- A" ?5 v1 j8 v: o5 l5 M" D& _harmed more and more by human activity. As we develop our technology, we demand more from our planet. Eventually, this will harm people as well. 3 j( \ O% ^2 Q& j6 p
Our planet gives us everything we need, but natural resources are not endless. Strip mining
2 k& m2 e) Y3 E7 _0 w$ Z. F; Ddevastates whole regions, leaving bare and useless ground. Deforestation removes old growth 7 z' m, n1 T9 C2 w* B* D
trees that can’t be replaced. Too much fishing may harm fish populations to the point where they |
发表于 2012-8-14 23:46:10
