4. Give reasons.
(i) Some rocks have a shape of a mushroom
(ü) Flood plains are very fertile.
(ii) Sea caves are turned into stacks.
(iv) Buildings collapse due to earthquakes.
Answers
Answer:
reasons r.........
Explanation:
1.Because they are formed on the flooding of rivers, by the deposit of fine soil layers and other material called sediments along the banks of the river.
2.Flood plains are very fertile because when it floods,it deposits layer of fine soil,many mineral salts and other material etc. These sediments make the soil very much fertile and leads to the formation of a very flat fertile flood plain.
3.because erosion breaks the roof of the caves and only walls are left ..Earthquakes are sudden movements of the earth which cause mass destruction.
4..earthquakes the vibration of ground can cause the liquefied sand and excess water to force its way to the ground surface from several meters below the ground. ... The soil loses its rigidity and flows like fluid.
......hope it's helpful....
Explanation:
(i)Some rocks have a shape of a mushroom (ii)Floodplains are very fertile (iii)Sea caves are turned into stacks. (iv)Buildings collapse due to earthquakes.. Answer: ... Therefore, such rocks have narrower base and wider top (ii)Floodplains are very fertile because floods deposit layers of fine soil and other material.