There is no specific unit such as a thousand. The length of time will depend on whether is it refers to thousands of millennia, thousands of days or thousands or microseconds - or thousands of any other unit of time.
thousands
Thinks that Sharks in a daily time can grow thousands of teeths is impossiblee.
KY stands for "thousands of years" when used in the context of geologic time. It is often used to denote time scales in the thousands of years range, such as 10,000 years (10 KY).
No, they take thousands and thousands, possibly millions of years (the point is, an incredibly long time).
Thousands at one time.
I would say thousands
Nurses
Ask any of the thousands who are already there.
nurses
thousands in one time, but some of them die at birth.
D-Day is sad because thousands upon thousands of US Soldiers lost there lives in a very short time.
There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.There are thousands and thousands of malls in Europe.