from Turtleback Books (October 1, 1999)
9780785792796 |
details & prices | 10.00 × 8.25 × 0.50 in. | Rec. grade levels 2-3 | 0.75 lbs | List price $16.00
About: Explains how life is sustained on Earth through the presence of water, food, and oxygen, and how the planet is different from a spacecraft because it can rejuvenate its supply of these critical resources