The three-domain system is a biological classification introduced by Carl Woese et al.in 1977[1][2] that divides cellular life forms into archaea, bacteria, and eukaryote domains. In particular, it emphasizes the separation of prokaryotes into two groups, originally called Eubacteria (now Bacteria) and Archaebacteria(now Archaea). Woese argued that, on the basis of differences in 16S rRNA genes, these two groups and the eukaryotes each arose separately from an ancestor with poorly developed genetic machinery, often called a progenote. To reflect these primary lines of descent, he treated each as a domain, divided into several different kingdoms. Woese initially used the term "kingdom" to refer to the three primary phylogenic groupings, and this nomenclature was widely used until the term "domain" was adopted in 1990.[2]
Parts of the three-domain theory have been challenged by scientists such as Radhey Gupta, who argues that the primary division within prokaryotes should be between those surrounded by a single membrane, and those with two membranes.
Answer:
Makes you feel better about yourself and feel more confident about your aperance ( sorry it's not the best answer but i tried)
Explanation:
here's some good ways to self care : Be aware of your emotions and reactions. ...
Express your feelings in appropriate ways. ...
Think before you act. ...
Manage stress. ...
Strive for balance. ...
Take care of your physical health. ...
Connect with others. ...
Find purpose and meaning.
No because sometimes they have to put animals down and that’s something I, as a full hearted human, could not do.
Answer:
It means we are sad and stuff
Explanation:
Because of what happened
Answer:
Zika is spread mostly by the bite of an infected Aedes species mosquit. Zika virus directly infects brain cells and evades immune system detection. Zika virus disease is generally mild, and severe disease requiring hospitalization and deaths are uncommon.
Explanation:
