The crust is the part you walk on, and it's the surface of the earth.
<span>a. Harappa
</span>Harappa<span> is believed to be one of the oldest cities of the Indus River valley civilization.</span>
Answer:
Option B.
Moving away from each other.
Explanation:
The spectra emitted by the objects in the solar system refer to the electromagnetic waves that are emitted from the object.
When viewed from the earth the shifting of the spectra to longer wavelengths suggest that the objects are not in the same position as they used to be. This is because the time the waves take to reach the earth have changed, thus suggesting also a change in their position.
There are three types of magma: basaltic, andesitic and rhyolitic magma. Basaltic magma have a characteristic runny liquid magma which contains low silica content. Andesitic magma is the intermediate one in terms of silica content and viscosity. The rhyolitic magma is the thick, high silica content magma.