A scientist who studies insects is known as an entomologist. Entomologists examine various aspects of insect life, including their behavior, ecology, physiology, and taxonomy. Insects play critical roles in ecosystems as pollinators, decomposers, and a food source for many organisms. Entomologists conduct research to understand insect biodiversity, pest management, and the impact of environmental changes on insect populations. Their findings can influence agriculture, public health, and environmental conservation efforts.