Which causes natural selection to occur? A. A lack of competition
B. The presence of predators
C. Unlimited resources
D. Populations below the carrying capacity

9. wind power creates pollution. water air soil noise

Which must be kept in mind when determining if an explanation is correct? check all that apply.which must be kept in mind when determining if an explanation is correct? check all that apply.

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.