Anthracite coal ____.
A)has up to 75 carbon
B)is actually a metamorphic type rock
C)is the most abundant form of coal
D)is dull-black
E)contains high amounts of volatile elements
Question 2Briefly discuss how the evolution of jawed fishes and other predatory creatures affected the marine ecosystem.
Question 3Plants have adapted to deserts by ____.
A)growing in clumps
B)growing rapidly
C)growing deep tap roots
D)having long dormant years
E)developing soft stems and leaves
Question 4Conglomerate is common, but sedimentary breccia is not. Why?
A)The gravel becomes rounded very quickly during transport.
B)The gravel is so easily consolidated.
C)The conglomerate is formed in place and does not have to be transported for long distances.
D)The sedimentary breccia is composed of rare rock types.
E)Conglomerate is weathered by water, but sedimentary breccia is weathered by wind.
Question 5Describe the characteristics of an excellent guide fossil and provide one example.
Question 6What is a common mode of mass wasting in deserts?
A)mud flows
B)rock fall
C)creep
D)slumps
E)slides
Question 7Detrital sedimentary rocks are ____.
A)organisms are important in its origin
B)always calcite and are formed in an alkaline environment
C)made up of interlocking mineral crystals
D)derived from parent material and usually classified by the size of their constituent particles
E)sometimes composed of small spherical grains called ooids that have a small nucleus around which concentric layers of calcite precipitate
Question 8What selective advantages did an exoskeleton or shell provide?
Quick Reply
