I need a picture of the question plz so I can answer it
Animal dander would be the answer you're looking for.
Hope this helps :)
Answer:
it has many years on it
Explanation:
it is old so it is not new
Oceanic plate crust is thinner and denser than continental crust, so the thinner oceanic crust gets bent and pulled under the continental crust. this creates a subtraction zone.