its spelt as photosyntheis, i dont think so they do however they probably hibernate so they dont starve to hells death :).
weapons: double wristblades, underarm blades,elbow blades, swords, combat spear, spear, plasmacaster, mini caster, nuke shoulder cannon, sherikans, 2 disks, remote bombs, mini spear gun,wrist fletchett, mask laser. equipment: advance tools, wrist computer, medikit, food, mask, energy recharger. extras: a picture of daveberg, deathdrop, note of davebergs advice.