Katie and her sister have entirely different features and traits. Katie has blond hair and brown eyes, but her sister has red hair and blue eyes. What causes these variations in traits such as hair color, eye color, and height? A. competition
B. offspring
C. alleles
D. fitness

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

Frequency of electromagnetic waves that a radio station is assigned is called