Parasites are the name given to organisms that live on or in another organism. Example: fleas, ticks, and bacteria.
A living organism
parasite
parasite
An organism is another word for a living thing.
A host...
A parasite is an organism that lives in or on another organism (host) and benefits at the expense of the host's health or resources. Parasites can cause harm to their hosts by causing disease or feeding on their tissues.
Organism is another term used to refer to a living thing.
This is known as a symbiotic relationship, where one organism lives in or on another organism. The organism living within is called an endosymbiont (e.g., bacteria within the human gut), while the organism living on the surface is an ectosymbiont (e.g., barnacles on a whale).
Those are parasites
It's called a parasitic relationship.
Organisms can be grouped as free-living or parasitic. A parasite is an organism which lives in or on another organism, from which it obtains its food. Since humans do not do this they are not parasitic, and so must be free-living.
biotic Organism alive