Ecology is the study of the relationships between living organisms, including humans, and their physical environment; it seeks to understand the vital connections between plants and animals and the world around them.
In Common Usage. documentation is one of the 10000 most commonly used words in the Collins dictionary.
Usually, a document is written, but a document can also be made with pictures and sound. In general, a document (noun) is a record or the capturing of some event or thing so that the information will not be lost. Usually, a document is written, but a document can also be made with pic... WhatIs.com