Which statement explains why ammonites are a good example of an index fossil?(1 point)
The fossil is younger than the layer of rock right above it.
The fossil is younger than the layer of rock right above it.
The fossil is older than the layer of rock it was formed in.
The fossil is older than the layer of rock it was formed in.
The fossil is younger than the layer of rock it was formed in.
The fossil is younger than the layer of rock it was formed in.
The fossil is older than the layer of rock right below it.
The fossil is older than the layer of rock right below it.
I need help please this is for the Age of Earth Unit Test
someone please help!!
PLEASE IM BEGGING ANYONE HELP ME PLEASE I CANT FAIL THIS TEST
Pls I need answers
The correct statement explaining why ammonites are a good example of an index fossil is:
The fossil is younger than the layer of rock it was formed in.
Ammonites are a good example of an index fossil because they fulfill the criteria of being used to define and identify a particular time period in Earth's history. They existed for a relatively short period of time, had a widespread geographic distribution, and evolved rapidly.
To determine which statement explains why ammonites are a good example of an index fossil, we need to examine the characteristics of index fossils. Index fossils are useful for dating and correlating the age of rocks because they are found in many different locations and lived for a relatively short period of time. Their relatively narrow range in time can be used to identify the age of the rock layers in which they are found.
Now let's evaluate the statements provided:
1. "The fossil is younger than the layer of rock right above it."
This statement is incorrect because index fossils are typically older than the rock layers in which they are found. They help to identify the age of those rock layers.
2. "The fossil is older than the layer of rock it was formed in."
This statement is also incorrect because index fossils are typically younger than the rock layers in which they are found. They represent a specific time period.
3. "The fossil is younger than the layer of rock it was formed in."
This statement is correct. Index fossils are typically younger than the rock layers in which they are found.
4. "The fossil is older than the layer of rock right below it."
This statement is incorrect because index fossils are typically younger than the rock layers in which they are found.
Therefore, the correct statement that explains why ammonites are a good example of an index fossil is:
"The fossil is younger than the layer of rock it was formed in."