Answer:
After an organism is buried, minerals carried by water such as silica, calcite or pyrite replace the organic material in the fossil. Some common examples are most dinosaur bones, petrified wood, and many trilobite fossils.
Answer:
There is coral and algea.
Explanation:
The answer that i'd go with is A.Sunlight
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b. one new offspring that is identical to the parent
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1. right atrium
2. aortic valve
im not sure if that is the answer
thats what i got