Question

● how are floods formed ?
● what are sand dunes ?
● how are beaches formed ?

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please answer all these three questions.
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Answer 1

$\sf\blue{How\:are\:floods\:formed\:?}$

• A flood can be caused by tsunamis, which are caused by earthquakes.
• Floods are also caused by hurricanes, heavy rains and over-flowing lakes, oceans, streams,ponds or rivers.

$\sf\orange{What\:are\:sand\:dunes\:?}$

• A sand dune is a mound of loose sand formed by the wind, usually along the beach or in a desert.
• Sand dunes can also formed by strong currents beneath the water commonly in the ocean.

$\sf\pink{How\:are\:beaches\:formed\:?}$

• Beaches are formed by sediments which are transported by waves and tides piled up along the shore.
• They are formed in sheltered environment.

Hope it helps you :)

Answer 2

Answer:

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Explanation:

${\bold{\bf{\fbox{\orange{How are floods formed ?}}}}}$

➪ Floods are often caused by heavy rainfall, rapid snowmelt or a storm surge from a tropical cyclone or tsunami in coastal areas.

➪ Floods can cause widespread devastation, resulting in loss of life and damages to personal property and critical public health infrastructure.

${\bold{\bf{\fbox{\pink{What are sand dunes ?}}}}}$

➪ A dune is a landform composed of wind- or water-driven sand. It typically takes the form of a mound, ridge, or hill. An area with dunes is called a dune system or a dune complex. A large dune complex is called a dune field, while broad, flat regions covered with wind-swept sand or dunes with little or no vegetation are called ergs or sand seas.

${\bold{\bf{\fbox{\red{How are beaches formed ?}}}}}$

➪ A beach forms when waves deposit sand and gravel along the shoreline.

➪ Some beaches are made of rocks Larry and pebbles. Over time they are worn smooth from being rolled around by waves. The rocks usually reflect the local geology.

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