Which geographical areas primarily encompass the distribution where Crotalus atrox is concentrated according to ecological observation?
Answer
Southwestern United States and Northern Mexico.
The geographical extent of the Western Diamondback Rattlesnake places its highest concentration and primary range within the southwestern United States, including states such as Texas, Arizona, New Mexico, and California, and extending southward into northern Mexico. This distribution defines its environment, which includes open desert scrubland, brushy grasslands, and rocky habitats within the Nearctic region, influencing its physiological adaptations for surviving temperature fluctuations in harsh North American environments.

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