Defunct is the word you would use but either your non-existant or your dead.
The trees being so tall, eruption on rocks shows that the earth has aged, and weathering. Because scientists can track down years from these things listed
"<span> You would not be able to pull your forearm up toward your shoulder" is the best option from the list, but it should be noted that there would be other issues as well. </span>
Answer: I think it is methanogenesis.
Explanation:
