It contained the first complex civilization in Mesoamerica.
Sedimentary Rock
Here's Why:
Fossils also form from molds and casts. If an organism completely dissolves in sedimentary rock, it can leave an impression of its exterior in the rock, called an external mold.
I got this information from http://www.livescience.com/37781-how-do-fossils
I hope this helps:)
Answer:
Explanation:
We know the area of the rectangle is length * width
We also know width = length - 5
Thus area is 
Answer:
Maybe explain the value of it and why it's important