Why is carbon-14 used with fossils? * 1 point
-to relative date the fossil and estimate its age in years
-to relative date the fossil and estimate its age using position
to radioactive date the fossil and identify its actual age in years
to radioactive date the fossil and places its age using its position in the rock layers

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)