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.
Bacterial pathogen can multiply quickly within a small space
Answer:
5 is the rough endoplasmic
Explanation:
Because there are other liquids in your body it passes through and it adds to the amount of water.
