The answer
is parasitism. Parasitism is a relationship in which one species benefits and
the other does not benefit. Predation is similar to parasitism in that both
types of relationship benefit one of the interacting species while harming the
other. Parasites are generally smaller than their host.
Parasitism can be defined
as a relationship between species in which one organism (parasite) lives on or
in another organism which is the host, causing it some harm without immediately
killing it. Thus, parasitism is a kinds of close, symbiosis and persistent
biological interactions.
A climber at altitude has potential energy due to efforts to lift him higher in gravity's grip. His elevation gives him the potential to create kinetic energy if he had the misfortune to fall off
