The Rocky Mountains began forming in the western United States about 60 million years ago. The Appalachian Mountains and the Rocky Mountains were similar in height when they first formed. Which statements about the Rocky Mountains are true? Select the two correct answers.(1 point) Responses They are shorter than the Appalachian Mountains. They are shorter than the Appalachian Mountains. They are older than the Appalachian Mountains. They are older than the Appalachian Mountains. They are taller than the Appalachian Mountains. They are taller than the Appalachian Mountains. They are younger than the Appalachian Mountains.

The two correct statements about the Rocky Mountains are:

- They are older than the Appalachian Mountains.
- They are taller than the Appalachian Mountains.

To determine which statements about the Rocky Mountains are true, we need to compare them with the Appalachian Mountains.

1. "They are shorter than the Appalachian Mountains": To know if the Rocky Mountains are shorter than the Appalachian Mountains, we should compare their heights. However, the question does not provide any information about their current heights, so we cannot determine if this statement is true.

2. "They are older than the Appalachian Mountains": According to the information given, the Rocky Mountains began forming about 60 million years ago, while the Appalachian Mountains formed earlier in Earth's history. Therefore, it is correct to say that the Rocky Mountains are younger than the Appalachian Mountains.

3. "They are taller than the Appalachian Mountains": Similar to the first statement, we don't have any information about their current heights, so we cannot determine if the Rocky Mountains are taller than the Appalachian Mountains.

4. "They are younger than the Appalachian Mountains": As explained above, the Rocky Mountains are indeed younger than the Appalachian Mountains. Therefore, this statement is true.

Based on the given information, the two correct statements about the Rocky Mountains are:

- They are older than the Appalachian Mountains.
- They are younger than the Appalachian Mountains.

The two correct statements about the Rocky Mountains are:

1. They are older than the Appalachian Mountains.
2. They are taller than the Appalachian Mountains.