pathogens
viruses
Micro organisms refer to microscopic creatures, such as bacteria. Humans are not among which.
Humans are considered free-living animals as they are not obligate parasites that rely on a host for survival. While humans can have parasitic relationships with certain organisms (e.g., bacteria or viruses), they are not classified as parasitic by nature.
free-living! We don't live on or in other organisms.
free-living! We don't live on or in other organisms.
Food and water infected with pathogenic bacteria that cause diarrhea.
No. They eat small fish and microscopic organisms.
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.
An ascariasis is a disease of humans caused by the parasitic roundworm Ascaris lumbricoides in humans and other species of Ascaris in other mammals.
Humans are considered free-living organisms, as we are capable of obtaining our own food and energy from the environment. While we rely on resources from the environment to survive, we are not considered parasitic because we do not solely depend on a single host for our survival.
The group of pathogens that are one-celled microscopic organisms are bacteria. They are single-celled microorganisms that can cause infections and diseases in humans, animals, and plants.
Bacteria are microscopic organisms that can cause diseases in humans and other animals. A microscopic examination of the metal bracket showed cracks around the weld. Spiders can climb on glass using the microscopic hairs on their feet.