What is a floodplain?
A. A ridge of sediment, usually sand or gravel, deposited in the middle or along the banks of a stream.
B. A body of sediment deposited at the mouth of a stream when the stream's velocity decreases.
C. A broad strip of land built up by sedimentation on either side of a stream channel. Covered with water during a flood.
D. Step-like landforms found above a stream.
Answer: C
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Preserved records of prehistoric organic activity such as tracks, trails, burrows, and nests are called ____
a. trace fossils b. carbonizations
c. casts d. molds e. permineralizations
Sedimentary rock may be formed from the shells of organisms containing calcium carbonate
Indicate whether the statement is true or false
The 98th meridian marks an important biophysical mark in North America for this biome where increasing aridity produces vegetation of a distinctly different stature
A) midlatitude broadleaf and mixed forest B) desert C) Mediterranean shrubland D) midlatitude grassland
Mutations in the V(J)D genes is called which of the following?
A) affinity maturation B) affinity mutation C) cancer D) none of these