Endospores are hardy, defensive structures that enable some bacteria to survive harmful environmental conditions, such as starvation, high temperatures, desiccation (drying out), chemical disinfectants and extremes in pH.
Recursive formula is a formula that is used to determine the next term of a sequence using one or more of the preceding terms.
This recursiveness in a function or concept is closely related to the procedure known as mathematical induction and is mainly of importance in logic and mathematics. For example, âx is a formula of logical system L,â or âx is a natural number,â is frequently defined recursively.