1.which influence is an external influence? .
a. heredity. b. experiences. c. preferences. d. lifestyle.
2. which influence is an internal influence? .
a. cultural background. b. likelihood of getting certain diseases. c. health knowledge. d. media messages
3. which question should you ask to evaluate the credibility of health information?
a. does the article contain illustrations?
b. is the information up to date?
c. is the information available online?
d. is the information

1. The correct answer is Heredity. The influence of external is heredity. Heredity is a way of passing traits which are from parents up to the offsprings by sexual reproduction or asexual reproduction. The studying of heredity is referred to as genetics.

2. The correct answer is Health knowledge. The internal influence is more about health knowledge.

3. Correct answer is the information is up to date.

This is the question which should be asked to evaluate the credibility of an information. Health information should be given up to date such that the doctor who is dealing with your case of health should know your health history.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

the correct answer is d