How does the strength of continental crust vary with depth?
A) Rocks become stronger with depth and then get weaker deep in the crust.
B) Rocks weaken with depth and then get stronger deep in the crust.
C) Rocks systematically get stronger from the surface to deep in the crust.
D) Rocks systematically get weaker from the surface to deep in the crust.
A) Rocks become stronger with depth and then get weaker deep in the crust.
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A major factor that allowed species to adapt to new environments and form new species through natural selection happened
a. because Pangaea began splitting apart about 135 million years ago b. about 18,000 years ago when South America and North America split apart c. about 200-250 million years ago when India and Africa split apart d. happened about 250 million years ago, because Pangaea began splitting apart e. because Asia and North America split apart 180 million years ago
What water mass is the most saline in the world ocean?
a. Antarctic Bottom Water b. Northern Atlantic Deep Water c. Northern Pacific Deep Water d. Mediterranean Deep Water e. Arctic Bottom Water
Which of the following statements is true?
A. Meridians are points for measuring location in the E-W direction, and parallels are points for measuring location in the N-S direction. B. Meridians are lines for measuring location in the N-S direction, and parallels are lines for measuring location in the E-W direction. C. Meridians are points for measuring location in the N-S direction, and parallels are points for measuring location in the E-W direction. D. Meridians are lines for measuring location in the E-W direction, and parallels are lines for measuring location in the N-S direction.
The cyclic structures of monosaccharides are which of the following?
A) acetals B) hemiacetals C) ethers D) esters