Akathisia literally means inability to sit, and is a type of movement disorder in which the patient feels extreme inner restlessness along with a forcible need or desire to be in continuous motion by performing actions such as rocking backwards and forwards when sitting or standing, marching on the spot by lifting feet and also crossing and ...
The earliest evidence for life on Earth is graphite found to be a biogenic substance in 3.7 billion-year-old metasedimentary rocks discovered in western Greenland and microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia.
It is now known that Precambrian rocks contain evidence of the very beginnings of life on Earth (and thus the record of its evolution for more than 3.5 billion years), the explosion of life-forms without skeletons before the Cambrian, and even the development of sexual reproduction.