What would be a good 3d life science model

What type of reaction is zn + cucl2 → cu + zncl2?

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)

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.