<span>Living things are biotic factors like a dog, fungi and trees
I hope this helps!</span>
Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.
Answer:
nice bed sheets
Explanation:
its A i just finished with that a few days ago a
I think it the answer could be a "steamy mixture of carbon dioxide and water vapor".
