I. The Edvidence of Fossils

A. (28-1) The Formation of Fossils

1. Fossil: The actual remains or any trace of an organism that lived at
some time in the past.
2. Petrifaction: The process by which the body of a dead organism is
slowly replaced by dissolved minerals.
3. Mold: A rock as a hollow form; Cast: A copy of the external form of
the original organism.
4. Imprint: A type of fossil formed when an impression made in mud by
a living thing is preserved when the mud is transformed into rock.

B. (28-2) Sedimentary rocks:

1. Sedimentary Rock: A type of rock formed from layers of particles
that is settled to the bottom of a body of water, often containing
fossils.
2. Water flowing into these bodys of water carry fine particles of rock
called sediments.
3. The size and mineral composition of sediments being deposited by
the rivers will usually change from time to time. Therefore, the
sedimentary rock acquires a layered structure.
4. Geologists have......

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Title: Outline- Chemical Regulation (Biology Honors)
Approximate Word Count: 1477
Approximate Pages: 6 (250 words per double-spaced page)

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