Which statements explain reasons why unconformities occur? check all that apply. 1rocks along a fault break and move. 2igneous rock forms at earth’s surface. 3rocks erode and sediment is deposited. 4no sediment is deposited over a long time. 5igneous rock forms between sedimentary layers.

3. Rocks erode and sediment is deposited.

4. No sediment is deposited over a long time.

Explanation:

An unconfomity is a break in stratigraphic record of a place usually as a result of non-deposition or erosion.

In a sequence of sedimentary rock strata some surfaces called unconformity surfaces gives clues about the depositional history of a particular place. During an unconfomity, there is usually no sediment deposition and when deposition resumes, the underlying rocks and the new ones will not share the same attribute especially by age. Unconformity can also be as a result of erosion of a sequence.

In the case of non- conformity, a sedimentary rock is deposited above an igneous or sedimentary rock. Option 5 is a simple example of an igneous intrusion called a sill. It is not unconformity.

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the answer is b.) hydrogen bonds between bases.