Complex sentence: The natural diet of the widespread viper genus "Echis" includes arthropods, such as scorpions; however, various "Echis" species consume different proportions of arthropods in their diet.
Split into simpler sentences: The natural diet of the widespread viper genus "Echis" includes arthropods, such as scorpions. Various "Echis" species consume different quantities of arthropods in their diet.