Question

shortly say about age of the crust along mid ocean rdiges amd ocean trenches

Answer 1

Oceanic crust is youngest at mid‑ocean ridges (new crust forms at the ridge axis, ~0 Ma) and becomes progressively older with distance from the ridge in a symmetric pattern. The oldest oceanic crust is found near ocean trenches where it is being subducted, typically up to about 150–200 million years old.