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.
An organism may become a native species after being carried by birds to a territory. Islands tend to house a great number of native species. A native species lives in an area for natural reasons, with no human intervention involved.wo types of native species are recognized: endemic species are found only in the area concerned, while indigenous species are also found naturally in other areas. Endemic organisms are particularly vulnerable to extinction as they may be confined to a very small region and to particular habitats within that region.