The Mesozoic Era is called the “Age of Reptiles” because ____
a. there were more reptiles than any other type of animal
b. reptiles were the only animals to show evolutionary change
c. even though there were more plants than reptiles, plants did not evolve
d. reptiles predominated the land-dwelling vertebrate animals
e. reptiles dominated the oceans
d
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Look at the map of volcanoes of the world, and describe where most of the world's volcanoes are
found. What will be an ideal response?
Only eight elements make up the vast majority of rock-forming minerals. Which of the following elements is not one of the eight?
A) Oxygen B) Hydrogen C) Iron D) Potassium
Not much dolomite is observed to be precipitating from solution in modern geologic environments. This probably means that:
a. the conditions were more conducive to precipitation of dolomite in the geologic past b. dolomite must have formed from calcite after deposition by the replacement of calcium by magnesium in the mineral structure c. dolomite is probably forming today, but we haven't located the environments where it is taking place d. dolomite must have formed from gypsum after deposition by the replacement of calcium by magnesium in the mineral structure
A wave behaves as a shallow water wave when the depth of the ocean is less than
A. one wavelength. B. 1/2 wavelength. C. 1/20 wavelength. D. 1/23 wavelength.