Pedestrian_A

真實加拿大一号公路

Pedestrian_A

交通空氣污染應該都幾嚴重呀4 j. f# q$ R! V4 M; O; G6 }
free2penny 發表於 2016-7-12 09:30 PM

所以車有cabin air filter
# \1 B. K! v1 `4 T: c& G公仔箱論壇

0 X+ Z, h# c% |. Jtvb now,tvbnow,bttvb加拿大很多樹但也期望森林吸收掉人們無節制排放的二氧化碳。
" g" s- x' _/ ]SweetLemon 發表於 2016-7-14 10:34 AM

not enough trees in the city

Pedestrian_A

! U- S  w7 A5 G公仔箱論壇TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。3 E5 `' j- ~# W: m7 B
No, I read that when the leaves fall it released CO2 back to nature.
! v( K4 _' N3 q+ ]3 @* G" U9 t& `tvb now,tvbnow,bttvbI don't know its true or not.
" `3 l1 I7 p/ r1 O" Q2 J5 tSweetLemon 發表於 2016-7-14 08:05 PM

A tree can absorb 13lb CO2 every year.  A typical V8 car produce 220g CO2 per km.  How many trees are needed?