Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.



A presentation on trees!

Mark Firehaven

on 24 March 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Trees!

Like what?
Well, for starters, it can be used for paper, and unlike trees, some species of bamboo grow about a foot a day. There is a shop that makes bikes out of bamboo and you can buy bamboo skateboards online. Some species of bamboo are as strong, pound per pound, as steel and are a very good construction material.
It's ridiculous growth rate allows it to be a much better use for paper than wood, and can actually function as an alternative to it.
Air quotes
The Arbor Day Foundation says "a mature leafy tree produces as much oxygen in a season as 10 people inhale in a year."
"A single mature tree can absorb carbon dioxide at a rate of 48 lbs. /year and release enough oxygen back into the atmosphere to support 2 human beings." - McAliney, Mike
"One acre of trees annually consumes the amount of carbon dioxide equivalent to that produced by driving an average car for 26,000 miles. That same acre of trees also produces enough oxygen for 18 people to breathe for a year." - New York Times
"A 100-ft tree, 18" diameter at its base, produces 6,000 pounds of oxygen." - Northwest Territories Forest Management
"On average, one tree produces nearly 260 pounds of oxygen each year. Two mature trees can provide enough oxygen for a family of four." - Environment Canada, Canada's national environmental agency
"Mean net annual oxygen production (after accounting for decomposition) per hectare of trees (100% tree canopy) offsets oxygen consumption of 19 people per year (eight people per acre of tree cover), but ranges from nine people per hectare of canopy cover (four people/ac cover) in Minneapolis, Minnesota, to 28 people/ha cover (12 people/ac cover) in Calgary, Alberta." - U.S. Forest Service and International Society of Arboriculture joint publication

Chop Chop!
Many, many trees are cut down every day.
It is approximated that 60,000 square kilometers of primary forest (this means not plantation or tree farms) are cut down each year. Tree density in primary forests range from about 50,000 to 100,000 trees per square kilometer.

The math puts this at between 3 to 6 BILLION trees per year.
Yeah, but how does this affect ME?
If you paid attention, you remember that trees give us oxygen, which is, of course, the air we breathe.

The Amazon Rainforest ALONE provides 20% of the world's oxygen.
What are we gonna do? Stop using trees?
YES! And we will use the panda's lunch, BAMBOO!
Bamboo is an alternative that can be used as an alternative for many, many things we use wood for!
A fully mature 100'x100' patch of timber bamboo can provide enough material to frame an entire house every year.
Our Friend the Arbor!
As you can guess, the tree is our friend, providing us with oxygen (along with many other plants).
We use them for lumber, paper, and fuel, and they are being reduced by a huge number.
But what can we do for our leafy friends?
A lot, really, can be done to make amends.
But before I can say what we can do, let me tell things about trees.
Full transcript