Question

Make the question short with the same meaning
➢ The running water in the river erodes the landscape. When the

river tumbles at steep angle over very hard rocks or down a

deep valley side it forms a waterfall.

➢ While entering the plain the river twists and turns and forms

large bends which are known as meanders.

➢ Due to continuous erosion and deposition along the sides of the

meander, the ends of the meander loop come closer and closer.

In due course of time the meander loop cuts off from the river

and forms a cut – off lake, which is also called ox -bow lake.

➢ Sometimes, the river overflows its banks causing flood in the

neighbouring areas. As it floods, it deposits layers of fine soil

and other material called sediments along its banks. As a result

– fertile floodplain is formed . The raised banks are called levees.

➢ As the river approaches the sea, the speed of the flowing water

decreases and the river begins to break up into several streams

known as distributaries.

➢ The river becomes very slow that it begins to deposit its load.

Each distributary forms its own mouth. The collection of

sediments from all the mouths forms a delta, which is a

triangular landmass.​

Answer 1

Answer:

=Even burning kerosene in simple wick lamps also produces significant emissions of fine particles and other pollutants. Exposure to smoke from cooking fires causes 3.8 million premature deaths each year.

Various Causes of Air pollution

1. The Burning of Fossil Fuels

Sulfur dioxide emitted from the combustion of fossil fuels like coal, petroleum for energy in power plants, and other factory combustibles is one the major cause of air pollution.

Billions of vehicles run on roads are powered by gasoline and diesel engines that burn petroleum for releasing energy. Petroleum is made up of hydrocarbons, and engines don’t burn them cleanly.