Task: Text Simplification
Input (English): their unusual size is attributed to island gigantism , since there are no other carnivorous animals to fill the niche on the islands where they live , and also to the komodo dragon 's low metabolic rate.
Output (English): their rare size is caused by island gigantism because there are no other meat-eating animals to compete on the islands where they live and also because of the komodo dragon 's low metabolic rate.