Canadian Wildlife Federation
Hinterland Who's Who: Seabirds
Get the facts about seabirds. This group of birds makes up about three percent of the various species, even though two-thirds of the Earth is covered in water. Learn some unique facts and characteristics of seabirds. Also included in...
Annenberg Foundation
Annenberg Learner: Water Resources
Freshwater accounts for only some 6 percent of the world's water supply, but is essential for human uses such as drinking, agriculture, manufacturing, and sanitation. As discussed above, two-thirds of global freshwater is found underground.