How is it possible to reconstruct past climates when no records were available?
What will be an ideal response?
Answer: Past climatic conditions leave clues in the oceans, glaciers, geological records and in biological records. Scientists use many different methods to reconstruct past climates.
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Energy can be formally defined as
a. the velocity of any moving object b. the heat generated by atoms losing electrons c. the ability to do work or produce heat transfer d. the displacement of heat from the Sun to the Earth e. the process of moving objects
Chemically active fluids are ________
A) fluids that contain large quantities of oxygen which reacts with most minerals to form new minerals during metamorphism B) more acidic than regular fluids C) more basic than regular fluids D) fluids that readily change to gases at surface conditions
If a neutral element has the following chemical symbol, how many electrons does it have? O
A) 6 B) 18 C) 12 D) 24 E) none of the above
Mongolia's recent economic growth is driven by ________ exports
A) mining B) oil C) horse meat D) manufacturing