Generally, large birds and seabirds live longer than small birds. Albatrosses live so long that it is hard to calculate their survival rates - they can live longer than the metal rings that identify them, and probably longer than most humans.
Food chain. Definition. A feeding hierarchy in which organisms in an ecosystem are grouped into trophic (nutritional) levels and are shown in a succession to represent the flow of food energy and the feeding relationships between them. Supplement.
Contemporary definitions for food group. noun. a group of foods that have similar nutritional properties and is part of the hierarchy of the food pyramid, such as cereal group, milk group, meat and protein group, fruit and vegetable group, fats and sweets group. 15 Powerful Quotes about Language.