<span>The angle of dip varies according to
Earth's magnetic field lines. The Magnetic Dip varies with different points on the
planet's surface. Positive values of inclination means that Earth's magnetic
field is pointing downward while negative values indicate that it is pointing
upward.</span>
Landslides in California occur mainly due to intense rainfall but occasionally are triggered by earthquakes. Landslides are common in Southern California, the San Francisco Bay Area and other parts of Northern California, and the Sierra Nevada.
The answer is The unsorted sand and rock is the least porous. The porousness of a solid material is dependent on the size of holes within it. This can be tested by how quickly, the material can pass a liquid through it. The bigger the holes, the higher the porousness, In this case, the unsorted sand and rock have the smallest holes between its particles.
