Which one of the following is not a speleothem?
a.) stalactite
b.) geyserite
c.) stalagmite
d.) dripstone
Ans: b.) geyserite
You might also like to view...
Which of the following is valid for how rocks weather?
A) Quartz is very soluble during weathering at low temperatures. B) Limestone weathers rapidly in wet climates but can form cliffs in dry ones. C) As a granite weathers, quartz rapidly decomposes into clay minerals. D) Most minerals in granite weather at nearly the same rate and so granite has smooth surfaces.
The need to open its doors to immigrants from Asia and other non-European countries seems to have had what effect on Australia?
A. Racial intolerance and hate crimes have increased. B. White Australians seem to be increasingly comfortable with their multiethnic country. C. Trade relations with Europe and North America have strengthened. D. Aborigines have been moving further into the Outback.
Which of the following statements about chain reactions is true?
A) The key requirement for a chain reaction is that more neutrons are produced than are absorbed. B) Three or more neutrons must be released to sustain a chain reaction. C) Only uranium isotopes are capable of supporting a chain reaction. D) It is not possible to stop or control a chain reaction once it has been started. E) A chain reaction will only take place when a critical mass of material has been assembled.
In modern evolutionary theory, _____ evolve
A)species B)plants C)animals D)populations E)individuals