Why are plains, above sea level as well as under the ocean, so flat?
What will be an ideal response?
Plains are usually located next to mountains. As sediments erode from the mountains, they collect in the depressions in the plains until the plains are level.
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The statement that "the same facies following one another in a conformable vertical sequence
will also replace one another laterally" is known as a. Gressley’s principle. d. Steno’s axiom. b. principle of fossil succession. e. Walther’s Law. c. Smith’s Law of Conformity
Pillow structures, pillow-shaped rounded masses, form where lava is extruded under water.
Answer the following statement true (T) or false (F)
Before the 1980s, chlorofluorocarbons (CFCs) were primarily used as ____.
A. ingredients in fire extinguishers and propellants in aerosol cans B. coolants in air conditioners and industrial solvents C. buoyancy gas in blimps D. ingredients in bleach and propellants in aerosol cans E. coolants in air conditioners and propellants in aerosol cans
The population of the Middle East and North Africa region is approximately
a. 500 million. b. 300 million. c. 700 million. d. just over 1 billion. e. almost 2 billion.