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 Punnett square depicting a cross between two pea plants heterozygous for purple (B) and white (b)
White-lipped peccary
A chest X-ray showing pneumonia characterized by the patch of gray-white areas.
Areas of sclerosis (see arrows) in the white matter of a patient with MS.
Which one is more healthier? DARK, MILK or WHITE chocolate