Which of the following is a characteristic of a weak acid? O A. It is not as dangerous as a strong acid.
O B. It is less concentrated than a strong acid.
C. It does not dissociate completely in water.
D. It does not conduct electricity in water.

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)