Trivial statements no nemo in a desert. 2 diff phys envi - -results in diff species . Species aren"t equally distributed - # of amphib species huge concentration of amphib. N and central america, central africa, indonesia . Plants chart same pattern majority of places where high plant diversity same regions of amphibs. Ctrls where organisms are lt description of weather based on avgs. On avg tropics warmer than climate here. Climate provides exp for geo limits of species (blue jay eastern half of us and some in. Ca weather data: us is dry on left, expansion northward b/c climate is changing) Effects of climate acutely drought eg normal vs drought stage (b and a) Middle earth warm solar radiation at earth . Upper and lower same amt of radiation is spread over larger area b/c earth is angled. B/c equator warm warm air rises low pressure system rise to precip. Warm air rises cools condenses and rains.