Answer:
B, A fossil found in rocks from one time period
Explanation:
Fossils are used to determine the ages of rock layers. Index fossils are the most useful for this. Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in. Hope that this helps you :)
I believe that it is producer, herbivore, carnivore, decomposer Thanks for posting your questions on Brainly
Answer:
The Answer is A
Explanation:
phycoerythrin is the pigment that gives red algae its color.
