Registered Environmental Manager (REM) Practice Exam

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What does a long-time temporal scale refer to in environmental science?

Annual rainfall variations
Daily temperature changes
Ice age and ocean circulation
Seasonal weather patterns

The correct answer is: Ice age and ocean circulation

A long-time temporal scale in environmental science refers to geological or climatic changes that occur over extensive periods, often thousands or millions of years. The impact of these changes can shape ecosystems, influence biodiversity, and affect global climate patterns. Ice ages, for example, represent significant periods of climate change characterized by long-lasting cold temperatures and the advancement of glaciers. Similarly, shifts in ocean circulation patterns over this extended scale can have profound implications for global climate and marine ecosystems. In contrast, factors like annual rainfall variations, daily temperature changes, and seasonal weather patterns are examples of short- to medium-term temporal scales. These elements are influenced by more immediate weather phenomena and provide insights into current climate conditions rather than the more extensive, evolutionary changes reflected in ice ages and ocean circulation shifts. Therefore, the reference to ice age and ocean circulation best aligns with the concept of a long-time temporal scale in environmental science.