Today there are 6,800 reptile species on earth; the major groups are alligators/crocodiles, turtles, lizards, and snakes. All reptiles are cold-blooded, and have bodies covered in dry, horny scales. Some reptiles lay eggs; others give birth to live young. Reptiles are distinguished from amphibians by the presence of scales.
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Even if California and the West gets more rainfall with global warming, earlier snow melt and hotter summers will likely produce more drought stress, increasing susceptibility to pathogens and invasive species. More...