A Tree and Its Trunk
Understanding the trunk of a tree is key to understanding how a tree works, and a primary reason why trees are so useful. The trunk is the part of a tree that connects the leafy crown with its roots........
http://www.cnr.vt.edu/dendro/forsite/treetrunk.htm

A Tree From the Air?
So where does all the food come from that the tree uses to grow? The answer is simple yet very complex - it comes from the air.
http://www.cnr.vt.edu/dendro/forsite/fromair.htm

Africanized Honey Bee
The Africanized Honey Bee, popularly known as the "killer bee," is moving into South Texas and the southern United States. Scientists are not certain how far north the bee will spread.....
http://honeybee.tamu.edu/africanized/about.html

Amazon
Journey into Amazonia
http://www.pbs.org/journeyintoamazonia/

Amazon River
Factmonster The Amazon River: World's Second Longest River
http://www.factmonster.com/ce6/world/A0803618.html

Amazon River
Species of the Amazon River
http://www.americazoo.com/kids/amazon.htm

Amazon River
Photos
http://www.junglephotos.com/scenery/river/river.html

Amazon River
National Geographic
http://www.nationalgeographic.com/wildworld/amazonriver/a...

Amazon River
Natural History Magazine:Freshwater Riches of the Amazon
http://www.naturalhistorymag.com/0901/0901_feature.html

Amazon River
Natural History Magazine:Freshwater Riches of the Amazon
http://www.naturalhistorymag.com/0901/0901_feature.html