Why do people need trees?
113768
People use the oxygen from the air and produce carbon dioxide. Trees use carbon dioxide and product oxygen. Trees also prevent erosion, provide many food products, provide shade and create an aestetically pleasing environment.
45018
1. Remember trees need carbon dioxide and turn them to oxygen? less trees means more carbon dioxide... which means global warming (CO2 is also called the greenhouse gas.)\n2. Trees need water... less trees means more water flowing down when it rains. also, soil erosion is an issue.
583462
they incorporate trees into their plans so, and arbor Friends plant all the time. it is not going to be so bad that way in 30, its fossil fuels that may be on the agenda at that chapter in OUR lives.
1183222
These have become necessary aspects of our modern lives, to access the resources necessary to fulfill the needs of modern civilization.  We are now capable, though, in producing synthetics to take the place of many aspects of mining and logging, and we are also capable of much cleaner, environmentally friendly access to resources, such as re-planting, minimally invasive mining, etc.  Good stewardship of resources is essential for continued growth and sustainable resources for our future.
154834
Because trees and plants take in carbon dioxide and put out oxygen.
324684
It reduces the wastes that would manifest in our environment.It also builds creativity for the person who practice it.
118359
That is a good question.  Trees are a renewable resource though, so it is kind of a non-issue.
279291
there are many plants on earth some of them are tall others are short it's not about escaping yes god make them that way but the question is why\nin simple words we can say to survive the tall trees can have more sun energy which it need it to live\nit's not about roots cuz some tall trees have short root but spread horizontally others spread vertically\nthere is a relation ship between the size of the root and the size of the green part not the tall of the tree
931184
Pro: There are lots of trees.  You can get lots of wood.\n\nCon: There aren't many people to cut trees or who need wood.  You'll have fewer trees.
316803
In the short term, Recycle.  In the long term, created designated tree farms. Grow and harvest a steady supply of trees as we would any other planted renewable resource. Albeit they would have to be heavily subsidized because of the slow growth rate of trees. Make logging in a natural wooded area restricted to cleaning out old growth/diseased trees.
99074
All trees create thier own sap. It is the "blood" of trees.
22008
Just like some people said, big tree are more easy to attach wind...people like to talk about BIG people, that's why :)
604902
you get more air from the trees, it takes away carbon dioxide, and it protects the ozone from further damage.
1101341
Plants are the true essence of life. Without them, no life in this world could be possible. When life appeared on earth, plants were the first to appear and then changed carbon-dioxide to oxygen and thus made life possible on earth. Even economically they provide us with lots of products. They control the climate on earth. So, with so many utilities they really are the most important thing on earth. So we must study their structures properly because that will help us sustain them on earth and in that way sustain ourselves too.
715361
That is some thing the person them selves would want to do first..\nhere is a site.. for Canada And The USA for treetment centres.. i would go that way so your not alone doing it...
16466
Because to some kinds of mushrooms, some kinds of trees are yummy.  There are a lot of mushrooms that like dead trees-- dead trees can't defend themselves anymore, but they're still yummy, so they're a fine place to live, if you're a mushroom. \n \nBy the way, mushrooms grow just about everywhere.  The ones on trees are some of the easiest to spot, but if you watch out for them on the ground too you'll find a lot more than you might expect. \n \n<3
325664
Plant a tree, recycle, sleep