Which is NOT correct? Relative age means age in comparison to other rocks, either younger or older.
Knowing the relative age of rocks helps us understand Earth's history.
New rock layers are always deposited on underneath of existing rock layers.
Deeper layers are older than the layers closer to the surface.
Deeper layers are older than the layers closer to the surface.

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

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A:Relative age means age in comparison to other rocks,either younger or older.

Explanation:

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it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.