Evolutionary psychology examines the human psychological traits which have been evolved through adaptations. The psychologists are of the idea that the traits and the behaviors which occurs universally are appropriate units to measure the adaptations made during evolution. Studies related to human behavior which is universally equivalent are studied and examined.
Herbivores eat plants, algae, and other producers. They are at the second trophic level. In a grassland ecosystem, deer, mice, and even elephants are herbivores.
Her father is the mortal Frederick Chase and her mother is Athena, the goddess of wisdom. She first appears in the first novel of the series, The Lightning Thief. Throughout the series she becomes close friends with Percy Jackson, later becoming his main love interest and girlfriend.