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COLLECTING SEASHELLS SEASHELLS. . .WHAT ARE THEY? THE SHELL AS AN ARCHITECT LET'S MEET SOME SHELLS WHERE TO LOOK STARTING A COLLECTION. . .HERE'S HOW COLLECTING ROCKS ROCKS ARE MADE OF MINERALS MAIN KINDS OF ROCKS COLLECTING GEMS FOR THE LUCKY FEW
COLLECTING SEASHELLS SEASHELLS. . .WHAT ARE THEY? THE SHELL AS AN ARCHITECT LET'S MEET SOME SHELLS WHERE TO LOOK STARTING A COLLECTION. . .HERE'S HOW COLLECTING ROCKS ROCKS ARE...
2. Chapter 2Metamorphic rocks have been changed from their original state into something else. Heat, pressure, chemical action change the crystalline structure, the texture, even form new m...