Which of the following is a theory?
A. There is molecular and biochemical evidence that all organisms are related.
B. Many people believe echinacea cures their colds.
C. A boy finds a chipped rock he believes is an arrowhead.
D. Many people claim that the Earth is only 6,000 years old.
Answer:A
Which of the following is a theory?
A. There is molecular and biochemical evidence that all organisms are related. B. Many people believe echinacea cures their colds. C. A boy finds a chipped rock he believes is an arrowhead. D. Many people claim that the Earth is only 6,000 years old.