specially for city's with high pollution
2006-12-19 04:42:09 · 5 answers · asked by jjsanmillan 1 in Science & Mathematics ➔ Botany
I would say a conifer tree or evergreen. Any tree that keeps it leaves all year round.
2006-12-19 04:46:48 · answer #1 · answered by patsy 5 · 0⤊ 0⤋
Good question. I think there are other factors to look at too. A tree that gives off lots of oxygen has to be a fast growing tree, consuming a lot of water for example. A slower but very tall tree might be better because it uses more space. Then the less polution the more people will want to live there. The wind blows the oxygen away anyhow. Less people on the planet is the answer. Keep Bush in office, he's fantastic at reducing populations, if you aren't downwind of the oil fumes.
2006-12-19 04:51:30 · answer #2 · answered by Anonymous · 2⤊ 1⤋
Sequioa trees. They have the most leaves and don't completely die in the winter. The sequioa production zone is also the longest which makes the tree have to give off more oxygen and absorb more carbon dioxide due to prolonged photosynthesis.
2006-12-19 15:36:06 · answer #3 · answered by Anonymous · 1⤊ 0⤋
a single tree, or even a small group of trees won't make a noticable difference in the oxygen supply for outdoors.
2006-12-19 04:54:14 · answer #4 · answered by The Cheminator 5 · 0⤊ 0⤋
If you looking toward the city environment, the basic requirement is that a tree can SURVIVE there. For that reason, the hardier trees are needed, like Gingko's.
2006-12-19 08:11:10 · answer #5 · answered by Lorenzo Steed 7 · 0⤊ 0⤋