glossary
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ecochemistry n. (écochimie)
science that studies the origin, presence, and dynamics of a chemical in the ecosphere

ecology n. (écologie)
science that studies the relationships between living organisms and their environment

ecosphere n. (écosphère)
the region of the planet containing all living organisms and their habitat

ecosystem n. (écosystème)
ecological system included living organisms (biocoenosis) and physicochemical and spatial conditions (biotope) in interrelation

ecotone n. (écotone)
transition area between two different ecosystems

ecotoxicology n. (écotoxicologie)
science that studies the pollution of ecosystems by chemicals and their adverse effects associated

endorheic adj(endoréique)
of which the watercourses do not reach the sea 

environment n. (environnement)
all chemical, physical, and biological conditions of a natural or artificial habitat

epiphytic adj(épiphyte)
which grows on plant, without contact with the ground

exorheic adj(exoréique)
of which the watercourses reach the sea