Over the past 100 million years, the global temperature trend has been such that the earth has become colder, and the temperature has fallen significantly.
The average change in the temperature for a specific predefined period is known as the temperature trend of such region. Degree Celsius per decade is the unit of measurement of the trend as such.
The temperature trend in the past 100 million years has led to the fall in the temperature.
Hence, the temperature trend for the period has been aforementioned.
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