A(n) ____________ ____________ is a physical or biological necessity whose presence in inappropriate amounts
limits the normal action of an organism. Fill in the blank(s) with the appropriate word(s).
limiting factor
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With a sketch, show why the setting sun often appears red to an observer on the ground. Why does the sun appear white at noon and red at sunrise and sunset?
What will be an ideal response?
A type of metamorphic rock that results from the recrystallization of limestone or dolostone:a
quartzite d. anthracite b. marble e. slate c. gneiss
Marine geologists can predict the age of igneous rocks of the sea floor by measuring ________.
A. the velocity of earthquake waves B. magnetic anomalies C. their grain size D. the percent of iron-rich minerals in the rock E. their density
Which of the following terrains is probably the oldest terrain on the alien world in the Investigation?
A. Sedimentary Terrain (S) B. Western Terrain (W) C. Dark Terrain (D) D. Polar Ice (P) E. Chasm (C)