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.
A species is a group of similar organisms that can breed with one another to produce fertile offspring. For example, humans are one species and dogs are another species.pecies and selective breeding. A species is a group of organisms that interbreed to produce fertile offspring. Selective breeding is when organisms are deliberately bred so their offspring have the desirable characteristics. 1  1. 2  2.