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How many syllables are in each of these words? return [1]     construction [2]     slide [3]      Massachusetts [4]  

The _________________________formed in the Pliocene and connected North America and South America?

With the breakup of Pangaea; a circum-equatorial ocean called ___________ formed.

Marine extinctions associated with times of glaciation may be caused by which of the following occurrences?

The fossil record indicates that the first form of life to occur on Earth was:

The first mammals were ________________.

Pangaea starts to break apart in the _______________________.

________ was the first astronomer to track sunspot movement with the aid of a telescope which was a huge advantage over his astronomical predecessors.

In the Northern Hemisphere, storm surge is always most intense on the ________ side of the eye (viewed from the ocean) where winds are blowing ________ the shore.

________ is the proportion of dissolved salts to 1000 g sample (g of salt/1 kg water).