There are two components to the definition of diarrhea: Frequency â It is normal for an infant to have stools up to 10 times a day, although most donât attain this goal. The frequency will slow down as baby gets older, but even some toddlers and preschoolers still go several times a day.
plants quality concentrations growth. Indicator species are plants and animals that, by their presence, abundance, lack of abundance, or chemical composition, demonstrate some distinctive aspect of the character or quality of an environment.
indicator organisms. Species very sensitive to changes in the environment, and whose presence or absence may be indicative of environmental conditions in a particular area or habitat. They serve the same purpose as the caged birds kept in old mines whose sudden death indicated presence of carbon monoxide.