The is should be C, Im not 100% sure though...
Aqueduct carries water over a long distance.
3) grass and pine cone
4) lemming, rabbit, insect, squirrel, deer, caribou and moose
5) badger and bear
6) wolf, snowy owl, hawk, fox and ant
7) lemmings would die out because they have no other food source
The answer to your question is H2O
Fungi because of the rotting and in moist places