A geologic eon is a very large period of time, typically encompassing billions of years. Examples include the Hadean, Archean, and Proterozoic eons in the Earth's history.
The ice age.
Very, very gradually in low energy depositional environments or very rapidly in high energy environments (think for example of storm surges that can move large volumes of material in a very small period of time).
little
The T rex.
He was important to the time period because he provided a product that was very out of the ordinary and was founded to be very needed.
A time period of the ancient Earth which had very stable climate
One of the characteristics of floods, is a large amount of rain in a short period of time. Another is sudden rain in a very dry low lying area.
Large returns in a short period of time
When the existing government is overthrown by a completely new group. The new group can be very small, such as the military, or very large, as in a popular revolution. After a period of time, the country adopts one type of government
It was very hot
Only if you consume it in large amounts in a sort period of time
No, it is a hole in the ground. It is a large wash that was carved in sedimentary rock over a very long period of time by the runoff from an inland sea (and finally from rain runoff).