(7th grade science question) In baking and science, do you think it is better to measure loose solids (like flour or sugar) by volume or mass? Why?​

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)