Water
Timber
Oxygen
2006-08-03 08:34:42 · 4 answers · asked by **LIBERTY** 1 in Education & Reference ➔ Homework Help
Water: extremely plentiful, moving water decent power source
moving water obviously not everywhere
Timber: decent fuel source and building resource, not very environmentally sound, burns dirty, renewability time is long
Oxygen: does not translate well for power usage yet, large quantities and easily accessible
2006-08-03 08:44:37 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Adv. Dis-adv. concerning what? Add details.
2006-08-03 15:39:26 · answer #2 · answered by mmenaquale 2 · 0⤊ 0⤋
Water -- you can drown in it.
Timber -- you can burn alive in it.
Oxygen -- I can only take so much of Oprah.
2006-08-03 15:40:48 · answer #3 · answered by Do Uno? 2 · 0⤊ 0⤋
i am not sure sorry
2006-08-03 15:39:22 · answer #4 · answered by mike 1 · 0⤊ 0⤋