Covers elements of alpine and lowland ecosystems, the role of wind, cold, snow and permafrost, animal and plant survival techniques, tundra food chains and food

Covers living and non-living elements of ecosystems, food chains, webs and pyramids, interactions within ecosystems, biodiversity and kingdoms, investigations t

Tom Walker, Alaska's premier wildlife photographer, presents the state's well-know wildlife along with its more unusual species in the incredible selections of