Answer:
A) sea level drops; land subsides
Explanation:
The sea is the final destination of all streams on land. All streams empty into seas which are the basins that collects all terrestrial materials.
The base level is the lowest level to which a river can erode its channel. The base level is greatly influenced by what happens to a sea.
When a river reaches its base level, erosion ceases. If a river is young and set above its base level, we see a rapid rate of erosion.
A sea, the final basin of depostion of rivers controls the base level to a very large extent. When there is a tectonic movement and a sea subsides. It becomes more deeper and lower. Sea level also falls and materials grades seaward. A river would cut rapidly along its channel and its bed to measure up to the level of the ocean.
Therefore, we see a very rapid rate of erosion of channels when sea level falls and the earth sags downward. This would lead to a lower base level.
When sea level rises and there is a tectonic uplift, rivers erode their channels less and begins to aggrade materials. The base level also rises.
<u>Answer:</u>
<em>The geological process taking place in the convergent boundaries is what is called subduction. </em>
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<u>Explanation:</u>
The tectonic plates moves from side to another and they are forced to sink because of substantial gravitational forces to the mantle.
The crust of the earth is continuous however it is divided into pieces, the pieces, therefore, is one called tectonic plates, and they move close to each other through the power of convection cycles contained in the mantle below the crust enabling the plates to move freely.
Answer
<u>A rapid improvement in standard of living can mean rapid economic growth with increased population in towns resulting to damaged environment in form of pollution.</u>
Explanation
When the standard of living is associated with rapid growth of the economy, a common scenario is migration of people to urban areas to work and operate businesses. The urban areas will experience increased populations with inadequate housing. The environment will be suppressed because more forests will be cleared to give out spaces for new housing projects. In addition to that, the pollution levels will increase because more wastes will be generated.
Heat from a nearby magma body
