The constraint or budget line, in the diagram below, represents the possible levels of consumption in the two periods given the individual's level of present income, future expected income and the prevailing interest rate 'r'.
Wasp, common name applied to most species of hymenopteran insects, except bees and ants. Insects known as wasps include the sawflies, the parasitic wasps, and the stinging wasps, which are the best known. About 75,000 species of wasps are known, most of them parasitic. Characteristics.
This article is about social insects. For other uses, see Termite (disambiguation). Termites are eusocial insects that are classified at the taxonomic rank of infraorder Isoptera, or as epifamily Termitoidae within the cockroach order Blattodea.