...if their internal temperatures drift more than...
...in winter when temperatures drop as low...
...keeping their body temperatures within narrow limits...
...conforming to external temperatures. Even for a...
...to different environmental temperatures, each animal has...
...nearly constant internal temperatures as the external...
...harshness of low temperatures by increasing the...
...Ectotherms have body temperatures close to environmental...
...Consequently, ectotherm body temperatures are almost entirely...
...not constant body temperatures that distinguish endotherms...
...with such stable temperatures that their body...
...that their body temperatures vary less than...
...maintain high body temperatures only part of...
...have low body temperatures. While sitting in...
...have higher body temperatures than mammals. Endothermy...
...and stable body temperatures, along with other...
...maintain stable body temperatures in the face...
...even when environmental temperatures drop as low...
...keep their foot temperatures just above 00C...
...generally maintain body temperatures within a narrow...
...of warm body temperatures depends on several...
...maintain core body temperatures of about 36-38oC...
...40oC in environmental temperatures as low as...
...may allow body temperatures to rise several...
...keep their body temperatures very stable over...
...body (and egg) temperatures warmer than the...
...hypothalamic thermostat when temperatures increase and cold...
...range of environmental temperatures over a period...
...can only survive temperatures as high as...
...fish can survive temperatures to 36oC. Some...
...experience subzero body temperatures protect themselves by...
...eggs, withstand body temperatures considerably below zero....
...Antarctic fishes, where temperatures can drop below...
...rates at these temperatures are so low,...
...periods of high temperatures and scarce water...

...or rigid as temperatures rise or fall....
...to different environmental temperatures, each species has...
...maintain stable body temperatures in the face...
...active at below-freezing temperatures. In a cold...
...in their internal temperatures. Many ectotherms adjust...
...have variable body temperatures. Bats and hummingbirds...
...have low body temperatures. While sitting in...
...have higher body temperatures than mammals. Animals...
...maintain body core temperatures of 36–38°C without...
...maintain their body temperatures above environmental temperatures,...
...temperatures above environmental temperatures, they must counteract...
...40°C in environmental temperatures as low as...
...to elevate egg temperatures by 6°C during...
...range of environmental temperatures. Many animals can...
...range of environmental temperatures by a physiological...
...fluid at different temperatures. Some ectotherms produce...
...body tissues at temperatures as low as...
...hibernation, their body temperatures decrease. Some hibernating...
...maintain normal body temperatures. A Belding’s ground...
...periods of high temperatures and scarce water...