2. ehleringer and clark studied the geographical distribution of four encelia species along a temperature and humidity gradient in the southwestern coast of north america. two of these species, e. frutescens and e. farinosa, are found inland, a hotter and dryer part of the range. the two figures below show the distribution of the two species and the par absorption of their leaves. discuss the unique habitat preferences of the two species in the context of the microclimatic gradients and their physiological adaptations. use the data to support your statements.