Uh, I believe (in order from least to greatest time) that there are Epochs, Periods, Eras, and Ages.
There are many more than four units of time. Here are a dozen of them: -- picosecond -- microsecond -- second -- minute -- hour -- day -- week -- fortnight -- year -- decade -- century -- millennium
Millennia are more than one millennium. A millennium is one thousand years.
There are 1000 years in a Millennium. Millennia is the plural of Millennium, so it depends on how many Millennia you are talking about.A millennium is a period of one thousand years. "Millennia" is more than one millennium.
More than one millennium is equal to multiple millennia. A millennium refers to a period of 1000 years, so more than one millennium would be multiple sets of 1000 years.
A millennium is one thousand years.
Less than 6 units or more than 10 units.
more than 180 but less than 360 degrees
Metric units have many advantages over Imperial units but precision and accuracy are not amongst them. Precision and accuracy depends on the individual units in use. For example, A kilometre is more accurate than a mile, A furlong is more accurate than a kilometre, A metre is more accurate than a kilometre, A yard is more accurate than a metre, A foot is more accurate than a metre, An inch is more accurate than a foot, A centimetre is more accurate than an inch, A thou is more accurate than a centimetre, and so on, and on.
China
There are more or less than 1.372 units of hospitals in Indonesia
The two units of time are the same - there are 100 years in one century, therefore, in 10 centuries there are 10 x 100 = 1000 years - the same amount of time as a millennium.1 millennium is 1000 years, and 10 centuries is 1000 years, meaning they are the same thing. 1 millennium = 10 centuries.
1 4 units for woman in aweek is the recommended amount according to the bbc news website