I have never heard of it- i think you mean the Paleozoic Era, which is one of the four main divisions of geological time, and it spanned from 545-250 mya (million years ago). Glad to help! :D
No. It is not good to be sad for a long period of time.
A long period of time is commonly referred to as an era or epoch.
Weather last s mostly long Time for example a snow storm
A long time is considered an eon or millions of years. It is a long period of time that is considered long. This "long time" is truly a long time.
period ( of time ) = periode long period of time= epoch menstrual period = la course punctuation = point !
An eon.
28 days
Yes, rabbits have good memories and can remember familiar people even after a long period of time.
It depends on what you consider long. Usually if your waiting for something exciting to happen (even if it's not a long time to wait) it feels like really long time! It depends on the perspective. If you are in a hurry and waiting for a train because you are late for work, a long time could be one minute. But if you are waiting for quitting time , one second could be a long time
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get old
drought is a long period of time