Horticulturists attempt to improve the growth, size, and resistance to disease of flowers, vegetables, fruits and nuts by producing better genetic strains of plants. Soil Scientists analyze and determine the best methods of managing soil to prevent erosion or nutrient depletion. Entomologists study the characteristics and behavior of insects. They research plant diseases, pests, and weeds and also analyze the soil. Veterinarians deal with the recognition, treatment, control and prevention of diseases in animals.
Ecologists explore the relationship between organisms and their environments.
Embryologists study the development of an animal from a fertilized egg through its eventual birth. Conservationists manage rangelands to ensure prudent use of livestock and wildlife, and protect habitats in the wild. Zoo and Wild Animal Park Curators plan, arrange and direct animal exhibits, including procuring animals and designing habitats. Animal Scientists do research on the breeding, feeding and diseases of domestic farm animals. Agricultural Scientists study farm crops and animals and develop ways of improving their quantity and quality.