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.
Recursion is a type of divide-and-conquer technique used to solve difficult programming problems by reducing a problem to simpler, but identical, sub-problems.. The sub-problems are then reduced to sub-sub-problems.. This multi-step reduction process continues until a trivial case is reached.