The law that states rock layers closest to the surface are the newest or youngest rock is
a. law of original horizontality
b. law of superposition
c. law of original lateral continuity
d. law of gravity and oppositional force
e. law of cross-cutting relationships

Color blindedness is a sex-linked trait. if we could see the pedigree chart for several more generations of the family illustrated here, we would expect a) more males to be color blind. eliminate b) more females to be color blind. c) no females to ever be color blind. d) an equal number of males and females that are color blind.