Verified answer

[tex]\large{{\red{\star\:}\bold{Question\:and\:Answer:-}}}[/tex]

1) Yes, wells score over canals because wells can be constructed at a very low cost while the construction of canals from the rivers is not affordable for poor farmers.

2) Perennial canals score over inundation canals because perennial canals supply water only when the rivers are in flood but, inundation canals supply water throughout the year.

3) Iron ore is exported from the Paradeep and Vishakhapatnam ports. Japan is the largest buyer of Indian iron ore.

[tex]\large{{\red{\star\:}\bold{Give\:Reason:-}}}[/tex]

1) Well irrigation adds fertility to soil because severals chemicals such as nitrate, chloride, sulphate etc are found mixed with the well water when they mix with the soil they increase its fertility.

2) Inundation canals are operational only during the rainy season because these types of canals are directly drawn from the rivers without any barrage or dam,thus we can use them only when the rivers are well flooded.

3) Impervious layers of rocks are necessary for tank irrigation so that water does not flow or pass slowly through it.

4) Canal irrigation is suitable in the Northern Plains because the soil in the region is porous and the level of groundwater is high.

5) The harvesting of the rainwater on a hill on a slope can prevent soil erosion because, after the heavy rainfall, rainwater harvesting reduces the time to collect water and can help to prevent soil erosion.