The white granite of the Idaho Batholith near Boise, Idaho, contains dark gray xenoliths of metamorphic material. Which is older? How do you know?
A) Granite; the principle of superposition
B) Xenoliths; the principle of cross-cutting relations
C) Granite; the principle of unconformities
D) Xenoliths; the principle of inclusions
Question 2
The Mississippi River cuts through Silurian-aged dolomite between northwestern Illinois and eastern Iowa. Which is older? How do you know?
A) Dolomite;the principle of superposition
B) Mississippi; the principle of original horizontality
C) Dolomite; the principle of cross-cutting relationships
D) Mississippi; the principle of lateral continuity
A 3-tonne (3.0-long-ton; 3.3-short-ton) great white shark off Isla Guadalupe
White-winged Duck at Sylvan Heights Waterfowl Park, North Carolina
Complete the table by dragging the white labels to the gray targets, the blue la
For a differential white blood cell count, (A) the slide is examined under oil immersion. (B) Cells ...
White Blood Cells Involved in Immune Response