Answer:
Two questions to answer
Explanation:
The website does not accept my answer - apparently there's inappropriate words in although I did not swear or refer to any unclean organs.
Answer:
A
along the banks of the Amazon river
Answer:
a. They must be present in a large geographic area.
Explanation:
Index fossils can be used to determine the age of a rock strata with great precision, but they must be scattered over a large geographic area to be able to be used reliable for this type of measurement. Index fossils typically indicate a certain type of paleoenvironment belonging to a very specific prehistoric period and their formation coincides with the age of the rock layer.
You didn't place any of your following answers, which makes it difficult for people to help. What do you think it is? Out of the options that you have.
Jordan river forms a natural boundary between Israel and Jordan and empties into the Dead Sea
