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.
Appearance: Parasitoid wasps are typically so small â most range from the size of a fleck of pepper to under 1/2â long - that they can only be reliably identified by an expert. Eggs: Are rarely seen, as they are usually inserted within the eggs or bodies of host insects.