Answer:
The marshes are defined as the type of wetland where the water covers the ground surface for a long period of time. Here, the trees are absent and are mostly dominated by the grasses and other small herbivore plants. They are commonly formed in delta type of environment where the rivers adds water into the seas. It forms an isolated and distinct ecosystem.
The marshes in nature, behaves like a filtration process as the vegetation that are present in marshes takes up more amount of nutrients for their growth and expansion. But, if it does not use up these excess nutrients then it cause water pollution comprising of nitrogen and phosphorous.
They also plays an important role in the reduction of damages that are caused by a flood.
The marshes are sometimes seasonal and it occurs when the height of the river level is relatively high, and it floods the grassland areas.
The marshes are of three types-
(1) Tidal salt marshes
(2) Tidal freshwater marshes
(3) Inland freshwater marshes.
South Africa has a republican government system, with a mixed market economy, composed of private liberty and a centrally planned economy.
<h3 /><h3>What is a planned economy?</h3>
It corresponds to the economic system where most companies belong to the state, which is responsible for decisions that influence business and the economy, unlike the market economy, which is determined by supply and demand.
Therefore, the centralized economy is an important factor in the country, where the state manages most of the wealth produced, with greater control over the economy.
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<em>The convergence between a continental plate and an oceanic plate</em><em> is subduction process where the denser oceanic plate force the </em><em>thinner continental plate to sink into the mantle.</em>
<u>Answer:</u><em> Option (D)</em>
<u>Explanation:</u>
The<em> type of volcanism formed the Andean Mountains in South America</em> is due to subduction process. It is due to the converging of Nazca Plate over Antarctic Plate due to gravity and made them to sink below the <em>South American Plate. </em>
This process still continues today and due to the activity, it causes volcanic eruptions and earthquakes in that region. It was reported about <em>150 - 160 (approx.) active volcanoes in the Volcanic Belt of Andes.</em>
The probable cause that would make this to happen is what is known as thrust faulting.
<h3>What is thrust faulting?</h3>
This is a situation that occurs in the earth's crust which causes it to break. When the crust breaks, the result is that it would cause older rocks to be on the new younger ones.
superposition is the ascending order by which rocks are arranged from the youngest to the oldest.
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Answer:
Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean, tsunami waves do not dramatically increase in height. But as the waves travel inland, they build up to higher and higher heights as the depth of the ocean decreases.
Explanation:
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