The word sari described in Sanskrit à¤¶à¤¾à¤à¥ ÅÄá¹­Ä« which means 'strip of cloth' and à¤¶à¤¾à¤¡à¥ ÅÄá¸Ä« or à¤¸à¤¾à¤¡à¥ sÄá¸Ä« in Prakrit, and which was corrupted to sÄá¹Ä« in Hindi. The word 'Sattika' is mentioned as describing women's attire in ancient India in Buddhist Jain literature called Jatakas.he tightly fitted, short blouse worn under a sari is a choli. Choli evolved as a form of clothing in the 10th century AD, and the first cholis were only front covering; the back was always bare but covered with end of saris pallu.
Oxygen in the atmosphere is important for life for two main reasons. First, oxygen makes up the ozone layer. The ozone layer is in the upper part of the atmosphere, and is mad â¦ e of O3 molecules-a particular type of oxygen molecule.It blocks harmful radiation from the sun and keeps it from reaching Earth's surface.he way the oxygen got into our atmosphere is when the green plants do photosynthesis. Green plants take in carbon dioxide, sunlight, and water to make glucose and of course o â¦ xygen. After a while, the plants did enough photosynthesis that the earth got an atmosphere.
Today oxygen makes up about 20 percent of Earth's atmosphere, but for the first two billion years after Earth formed, its atmosphere was anoxic (oxygen-free). About 2.3 billion years ago, oxygen increased from a trace gas to perhaps one percent of Earth's atmosphere.Another jump took place about 600 million years ago, paving the way for multi-cellular life forms to expand during the Cambrian Explosion.ndeed, the jumps in atmospheric oxygen at 2.3 billion years ago and 600 million years ago do seem to be associated with Snowball Earth episodes (Fig. 14). However, scientists are still unsure exactly what the connection might be between the extreme ice ages and changes in the oxygen content of the atmosphere.