Which type of absolute dating method would be best for a rock layer believed to be millions of years old? Chlorine dating

Carbon-14

Isotope 51

Potassium-Argon

raidometric

Explanation:

its the answer but its not  one of your choices ill try to frgure out a anwer that matches your options

Isotope 51

I hope to see helped =D

your answers are a,b,,e and f

i hope this

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.