scientists frequently use Celsius
less
Sleeping.
You should clean it everyday that you use it.
Pinned items are there regardless of the frequency in which you use the applications. The frequently used items list (in order) the applications (not on the pinned section) the applications you use most frequently.
Wash it frequently and use moisturiser:P
Mandarin
The dependent variable.
building block
yes
That depends on who is writing, generally letters like z,x, and q are used least frequently
There are a number of publications that frequently use "The Argus" for a name. Some examples include The Argus of Fremont, California and The Argus of the Bay Area.