To answer that question I would say A. source trait
Two species of crickets, Gryllus rubens and Gryllus texensis, have different courtship sogs which can be identified only by the opposite sex of their own species..... I hope this answer helped you out!
Biomes are typically defined<span> by their climate and dominant vegetation, including grassland, tundra, desert, tropical rainforest, and deciduous and coniferous forests.</span>
