As the earth has active tectonics we know that rocks are recycled and the oldest rocks may therefore just be the oldest rocks that have not been recycled yet. We know the true age of the earth by looking at radioactive isotopes of things like spacedust and meteors that formed at the same time as the earth as they have not been affected by the tectonic process of recycling here on Earth.
Answer:
B. Cell division
Explanation:
Cell division is a process where a mother cell splits into two daughter cells.
Answer:
D) Two parts of a skeleton meet
Explanation:
mark me as brainliest pls
Explanation:
what is this for because i think i might know
It would be B) unconscious. I know this because when you're not thinking about something it is not in your conscious mind, so it would be in your unconscious mind.
