Animals have a great variety of internal structures that define the way they live. for example, a bear has lungs to it get oxygen to all of its cells. what does a fish have that serves the same function? a. scales b. gills c. fins d. lungs

B

Explanation:

1. law of superposition: when there are horizontal layers of rock. the layers at the top are the youngest.

2. law of uncomformity: where one layer is much younger than the previous one, therefore creating a gap in the time record.

3. inclusion: when there is a solid stone inside of another.

4. intrusion: a feature formed when a stone is filled with magma.

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