Near Mardan, farmers and brick makers examine Fig. 1, which shows layers exposed in a borrow pit beside the Kabul River. The upper alluvium is used for crop...
Question 1 Report
Near Mardan, farmers and brick makers examine Fig. 1, which shows layers exposed in a borrow pit beside the Kabul River. The upper alluvium is used for crops, while clay below is removed for bricks. The district planning office wants to prevent the loss of productive land while allowing local economic development.
(a) Identify the deposit labelled X. [1]
(b) Describe how this material was deposited. [1]
(c) Explain two reasons why alluvial soil is important for farming in Pakistan. [2]
(d) Explain two problems created by removing clay from this site. [2]
Answer Details
(a) Alluvium/alluvial soil [1] (b) It was deposited by river water when flow slowed during flooding or on the floodplain [1] (c) Any two: fine sediment is often fertile and contains nutrients [1]; deep, workable soil supports high crop yields [1]; level floodplain permits irrigation and mechanisation [1]; soil retains sufficient moisture for crops [1]. [2] (d) Any two: removes fertile land from agriculture [1]; pits may fill with polluted/stagnant water [1]; increases erosion or flood vulnerability [1]; dust and lorry traffic affect nearby residents [1]. [2]
Download The App On Google Playstore
Everything you need to excel in your exams
