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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).

Which of the four lettered locations in this figure shows a seamount?

A ________ results when the outward-directed gas pressure (created by thermal nuclear energy) is balanced in a stable relationship with inward-directed gravitational force; 90% of all stars are in this balance.

If a spit grows as it is deposited and extends completely across the former mouth of an estuary, separating it from the open sea, it has become a ________. (Diagram provided to help you visualize, letters are not relevant for this question)

The term for a star that increases in brightness due to explosively ejecting most all of its mass is a(n) ________.

A ________ is a barrier built at a right angle (perpendicular) to the beach to trap sand that is moving parallel to the shore.