During an investigation, similar effervescent tablets were dropped into a beaker containing cold water and a beaker containing tap water the cold water takes 68 sec how long does it take the tap 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)