what is the first one classified into?
They are divided into eight classes.
Moss
The mosses, now division Bryophyta (Bryophyta sensu stricto), are divided into eight classes:
which part of the atmosphere does weather occur On Earth, most weather phenomena occur in the lowest level of the planet's atmosphere, the troposphere. what are its effects on human being? Climatic changes cause gradual drift of populations, and at times, extreme weather conditions may also affect historical events. does space also has it? Atmosphere is present on the planets within the solar system. which place is recorded for its extreme nature? The coldest air temperature ever recorded on Earth is , at Vostok Station, Antarctica and the hottest at 'Aziziya, Libya. has the coldest place's name ever changed? "Terra Australis". which animals are found at this place? The flightless midge "Belgica antarctica". how has the global warming effected it? Rise in sea level. who had explored this place in the past? In January 1840, an expedition team was led by the United States Exploring Expedition, under Lieut. Charles Wilkes. which plants are found here? Mosses, liverworts, "Deschampsia antarctica",  "Colobanthus quitensis" , and "Poa annua".
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Moss [SEP] Classification
Traditionally, mosses were grouped with the liverworts and hornworts in the division Bryophyta (bryophytes, or Bryophyta "sensu lato"), within which the mosses made up the class Musci. However, this definition of Bryophyta was paraphyletic, as the mosses appear to be more closely related to vascular plants than to liverworts. Bryophytes are now split into three divisions: Bryophyta, Marchantiophyta and Anthocerotophyta. The current circumscription of Bryophyta includes only the mosses. The mosses, now division Bryophyta (Bryophyta sensu stricto), are divided into eight classes: Six of the eight classes contain only one or two genera each. Polytrichopsida includes 23 genera, and Bryopsida includes the majority of moss diversity with over 95% of moss species belonging to this class.