Question

Arrange the layers in order from oldest to youngest.

https://cdn.ple.platoweb.com/EdAssets/adf65d6839714388b4104a95a74e38c5?ts=635835224053900000
Layer 3
Layer 4
Layer 1
Layer 2

Answer 1

1 2 4 3

Step-by-step explanation:

1 2 and 4 go and then 3 leaks through after