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

The correct answers are:

- Rocks along a fault break and move;

- Igneous rock forms between sedimentary rocks;

The unconformities are basically representing interruption and discontinuity in the rock layers. This occurs when rocks move and are placed between two layers of of rocks that were arranged by age, from bottom to top. This kind of things occur when there's geological activity and the rocks are moved, like in the faults, or during volcanic activities when there's magma intrusions that cool off and create igneous rocks.

D. No sediment is deposited over a long time.

E. Igneous rock forms between sedimentary layers.

Explanation:

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in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

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