The colonists could export goods only to Britain, according to the Navigation Acts.
According to these laws, no goods originating from the English colonies in Asia, Africa or America could be imported or exported by foreign ships.
This meant that foreign ships could not conduct any trade operations in the ports of English overseas possessions, nor transport goods to England, Ireland or Wales.
This increased the price of imported goods, thus causing a great harm to the economy of the Thirteen Colonies.
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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
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