¿Dónde se encuentran los microorganismos? ¿Los microorganismos son signos de enfermedad?

Microorganisms can be found both in the external environment  (ecosystem) and the internal environment (microflora) of higher organisms.

Explanation:

Microorganisms (microbes) are microscopic forms of life that include bacteria, protists, fungi and animal species, these organisms can se differentiated by using laboratory techniques such as the Polymerase Chain Reaction (PCR) or by microscopes. These organisms are both beneficial and both beneficial and pathogenic for humans. For example, the microflora may be useful in digesting nutrients contained in the food. On the other hand, Plasmodium falciparum is a pathogen microorganism that is found in the digestive system of mosquitoes and cause malaria in humans.