段四 Petrifaction may also involve a simultaneous exchange of the original
substance of a dead plant or animal with mineral matter of a different
compostion. This process is termed“replacement”because solutions have
dissolved the original material and replaced it with an equal volume of the
new substance. Replacement can be a marvelously precise process, so that
details if shell ornamentation, tree rings in wood, and delicate strutures in
bone are accurately preserved.
段五 Another type of fossilization, known as carbonization, occurs when soft
tissues are preserved as thin films of carbon.Leaves and tissue of
soft-bodied organisms such as jellyfish or worms may accumulate,become buried
and compressed,and lose their volatile constituents. The carbon often remains
behind as a blackened silhouette.
請問 23題問關於carbonization process 的 選項D
it is a more precise process of preservation than is replacement.
為何是錯的呢？
--
substance of a dead plant or animal with mineral matter of a different
compostion. This process is termed“replacement”because solutions have
dissolved the original material and replaced it with an equal volume of the
new substance. Replacement can be a marvelously precise process, so that
details if shell ornamentation, tree rings in wood, and delicate strutures in
bone are accurately preserved.
段五 Another type of fossilization, known as carbonization, occurs when soft
tissues are preserved as thin films of carbon.Leaves and tissue of
soft-bodied organisms such as jellyfish or worms may accumulate,become buried
and compressed,and lose their volatile constituents. The carbon often remains
behind as a blackened silhouette.
請問 23題問關於carbonization process 的 選項D
it is a more precise process of preservation than is replacement.
為何是錯的呢？
--
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