The Precambrian-Cambrian boundary represents the first appearance of ____
A)vertebrates
B)amphibians
C)reptiles
D)animals with skeletons
E)animals with soft bodies
D
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If coastal winds are blowing offshore producing a land breeze, the time of day is most likely ____
A) ?just after sunset B) ?late morning C) ?afternoon D) ?noon
Based on observations, geologists have determined that this factor does not help to determine whether a stream will have a meandering or braided pattern
A) bank stability B) stream power per stream bed area C) discharge variability D) channel slope
The higher the Air Quality Index, the better the quality of the air
Indicate whether the statement is true or false
A valley train is a(n) _____
a. string of lakes in a glaciated valley b. deposit of till where a hanging valley entered the trunk glacier c. first-order tributary glacier d. depositional landform composed of glacial outwash left by braided streams e. ice-scoured plain