Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
One ragweed plant can release as many as one billion grains of pollen!
51
Balsa wood is classified as a hard wood!
41
The only letter not appearing on the Periodic Table is the letter "J".
180
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304