The Valles Marineris canyon system on Mars is
A. the result of a rift.
B. wider due to erosion.
C. 4,000 km long.
D. All of these choices are correct.
Answer: D
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Without any addition or removal of water vapour, what happens to the actual vapour pressure when the air temperature increases?
A. It stays the same. B. It decreases. C. It becomes greater than the saturation vapour pressure. D. It increases.
Silica tetrahedra are able to link into long chains that share oxygen ions through the process of ________
A) isolation B) precipitation C) fission D) polymerization
Radiometric dating is based upon
a. the presence of fossils. b. cross-cutting relationships. c. spontaneous decay of radioactive elements. d. superposition. e. dendrochronology.
The fossils found so far probably represent about 50% of the species that have ever lived.
Answer the following statement true (T) or false (F)