help me with my earth science questions plz.?

ECW

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1. what was the earths first form of life.
a. a fish
b. a fren
c. a one celled organism
d. a reptile

2. which statement best describes the theory of uniforitaranism?
a. earth continues to change as it always.
b. earth is changing but not as quickly as it used to
c. earth is changing but faster than it used to.
d. earth is no longer changing

3. how does petrified wood form?
a. a log falls into water that freezes
b. sedimentary rocks form on a log
c. igneous rock cover a log and heats it
d. water sweeps through a log, replacing its cells with minerals

4. A cast fossil is formed form
a. ignouse rock
b. a mold
c. amber
d. wood

5. which of these substances best preserves soft parts of an organisms?
a. sedimentary rock
b. igneous rock
c. amber
d. wood
6. which part of aicent reptile would you expect to see in a rock fossil.
a. eye
b. bone
c. heart
d. muscle

7 which type fossle would most be most likly to show the complete out line of a leaf?
a. petrified wood
b. bone
c.cast fossil
d. trace fossil
 
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