The Green and Red Planet: A Physiological Study of the Possibility of Life on Mars

able active adapt air spaces altitude amount animals appear areas astronomers atmosphere atom Aviation Medicine bacteria become biological blood body boil called carbon dioxide cells cent Chapter chemical chemoautotrophs climate cold comparable course creatures discussion earth ecology effect energy environment examine exist extreme fact factor feet Figure functions glucose GREEN AND RED heat higher importance kind known latent less lichens light limits living matter living things lower maintain Mars Martian materials means measure Mercury miles minute molecules night observations organism oxygen photosynthesis physical physiological planetary possible present Press pressure principles problem produce question range reaches reason RED PLANET seen shows solar space square stars structure Strughold substance supply surface temperature University vapor various vegetation Venus Worlds York zero