Answer:
La asociación de estratos y fósiles surge porque las rocas y los fragmentos de sedimentos que forman el suelo están apilados en capas que contienen fósiles.
<span>Here we have two types of snacks typical of Mexico. In Mexico the big snack is called a cake. The cake has round bread1 and many ingredients. The small snack is called a sandwich. In the United States, what is a cake called?</span>
