Why is the Big Crunch a hypothesis and not a theory like the Big Bang

The Big Crunch scenario hypothesized that the density of matter throughout the universe is sufficiently high that gravitational attraction will overcome the expansion which began with the Big Bang.

Explanation:

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could you attach a picture of the map?

which elements do geologists measure to determine the age of an organism’s remains? check all that apply.

carbon-14

nitrogen

carbon-12