Active Science-4:@0.136341:0.974382:0.272816:0.974382:0.272816:0.957785:0.136341:0.957785:0.013067:0.008070:0.007082:0.005752:0.009742:0.009077:0.005087:0.011413:0.008070:0.005752:0.009077:0.011072:0.008070:0.009077:0.006075:0.009993
106:@0.067810:0.967768:0.097971:0.967768:0.097971:0.951170:0.067810:0.951170:0.010083:0.010083:0.009993
S:@0.448216:0.148039:0.488542:0.148039:0.488542:0.093987:0.448216:0.093987:0.040325
OIL :@0.488541:0.145619:0.577893:0.145619:0.577893:0.104840:0.488541:0.104840:0.036124:0.014276:0.027549:0.011403
Learning Objectives:@0.073529:0.302904:0.317869:0.302904:0.317869:0.280548:0.073529:0.280548:0.013490:0.014275:0.014196:0.010536:0.015948:0.007556:0.015948:0.016314:0.007346:0.019948:0.016340:0.007556:0.014275:0.012680:0.010301:0.007556:0.014301:0.014275:0.011503
To Understand: :@0.130719:0.339207:0.291350:0.339207:0.291350:0.321043:0.130719:0.321043:0.012554:0.013085:0.005969:0.015464:0.012958:0.013255:0.011598:0.008560:0.009453:0.008369:0.011534:0.012958:0.013255:0.005757:0.005863
•:@0.130719:0.358634:0.143592:0.358634:0.143592:0.339019:0.130719:0.339019:0.012873
  Soil formation :@0.143697:0.358634:0.310445:0.358634:0.310445:0.339019:0.143697:0.339019:0.005905:0.013786:0.013489:0.010727:0.006797:0.006797:0.006011:0.007180:0.010727:0.009538:0.018990:0.011917:0.008369:0.006797:0.010727:0.013085:0.005905
•:@0.514706:0.358634:0.527578:0.358634:0.527578:0.339019:0.514706:0.339019:0.012873
  Soil composition:@0.527684:0.358634:0.712360:0.358634:0.712360:0.339019:0.527684:0.339019:0.005905:0.017057:0.013489:0.010727:0.006797:0.006797:0.006011:0.009538:0.010727:0.018990:0.012299:0.010727:0.009941:0.006797:0.008369:0.006797:0.010727:0.012979
•:@0.130719:0.381361:0.143592:0.381361:0.143592:0.361746:0.130719:0.361746:0.012873
  Types of soil :@0.143697:0.381361:0.292241:0.381361:0.292241:0.361746:0.143697:0.361746:0.005905:0.013786:0.014275:0.011513:0.012299:0.010727:0.009941:0.006011:0.010727:0.007180:0.006011:0.009941:0.010727:0.006797:0.006797:0.005905
•:@0.514706:0.381361:0.527578:0.381361:0.527578:0.361746:0.514706:0.361746:0.012873
  Soil profile:@0.527684:0.381361:0.658427:0.381361:0.658427:0.361746:0.527684:0.361746:0.005905:0.017057:0.013489:0.010727:0.006797:0.006797:0.006011:0.012299:0.009538:0.010727:0.007180:0.006797:0.006797:0.010621
•:@0.130719:0.404089:0.143592:0.404089:0.143592:0.384474:0.130719:0.384474:0.012873
  Soil erosion :@0.143697:0.404089:0.284658:0.404089:0.284658:0.384474:0.143697:0.384474:0.005905:0.013786:0.013489:0.010727:0.006797:0.006797:0.006011:0.010727:0.009538:0.010727:0.009941:0.006797:0.010727:0.013085:0.005905
•:@0.514706:0.404089:0.527578:0.404089:0.527578:0.384474:0.514706:0.384474:0.012873
  Soil conservation:@0.527684:0.404089:0.720326:0.404089:0.720326:0.384474:0.527684:0.384474:0.005905:0.017057:0.013489:0.010727:0.006797:0.006797:0.006011:0.009538:0.010727:0.013085:0.009941:0.010727:0.009538:0.011513:0.011917:0.008369:0.006797:0.010727:0.012979
To Find Out::@0.130719:0.445267:0.255090:0.445267:0.255090:0.427103:0.130719:0.427103:0.012554:0.013085:0.005969:0.011152:0.006139:0.012958:0.013255:0.005969:0.016208:0.012958:0.008369:0.005757
•:@0.130719:0.464695:0.143592:0.464695:0.143592:0.445080:0.130719:0.445080:0.012873
  About weathering :@0.143697:0.464695:0.347236:0.464695:0.347236:0.445080:0.143697:0.445080:0.005905:0.013786:0.015443:0.011917:0.010727:0.013085:0.008369:0.006011:0.016632:0.010727:0.011917:0.008369:0.013085:0.010727:0.009538:0.006797:0.013085:0.011513:0.005905
•:@0.514706:0.464695:0.527578:0.464695:0.527578:0.445080:0.514706:0.445080:0.012873
  What is top soil, subsoil and bedrock?:@0.527684:0.464695:0.922824:0.464695:0.922824:0.445080:0.527684:0.445080:0.005905:0.017057:0.020944:0.013085:0.011917:0.008369:0.006011:0.006797:0.009941:0.006011:0.008369:0.010727:0.012299:0.006011:0.009941:0.010727:0.006797:0.006797:0.006011:0.006011:0.009941:0.013085:0.011917:0.009941:0.010727:0.006797:0.006797:0.006011:0.011917:0.013085:0.012299:0.006011:0.011917:0.010727:0.012299:0.009538:0.010727:0.009538:0.012703:0.009431
•:@0.130719:0.487422:0.143592:0.487422:0.143592:0.467807:0.130719:0.467807:0.012873
  The colour and size of the soil:@0.143697:0.487422:0.457290:0.487422:0.457290:0.467807:0.143697:0.467807:0.005905:0.013786:0.014275:0.013085:0.010727:0.006011:0.009538:0.010727:0.006797:0.010727:0.013085:0.009538:0.006011:0.011917:0.013085:0.012299:0.006011:0.009941:0.006797:0.010324:0.010727:0.006011:0.010727:0.007180:0.006011:0.008369:0.013085:0.010727:0.006011:0.009941:0.010727:0.006797:0.006691
Let’s Begin:@0.073529:0.550865:0.214860:0.550865:0.214860:0.528866:0.073529:0.528866:0.015830:0.012716:0.011739:0.006588:0.013961:0.005882:0.019101:0.014510:0.017108:0.008105:0.015791
  :@0.214862:0.548299:0.227764:0.548299:0.227764:0.527176:0.214862:0.527176:0.006542:0.006359
Soil is a very important natural resource. Plants grow in soil. Human and animals :@0.073529:0.581380:0.947543:0.581380:0.947543:0.560257:0.073529:0.560257:0.014526:0.011552:0.007320:0.007320:0.005536:0.007320:0.010706:0.005536:0.012833:0.005536:0.012399:0.011552:0.010271:0.012399:0.005536:0.007320:0.020451:0.013245:0.011552:0.010271:0.009013:0.012833:0.014092:0.009013:0.005536:0.014092:0.012833:0.009013:0.014092:0.010271:0.012833:0.007320:0.005536:0.010271:0.011552:0.010706:0.011552:0.014092:0.010271:0.010271:0.011552:0.006474:0.005536:0.015373:0.007320:0.012833:0.014092:0.009013:0.010706:0.005536:0.012399:0.010271:0.011552:0.017912:0.005536:0.007320:0.014092:0.005536:0.010706:0.011552:0.007320:0.007320:0.006474:0.005536:0.019170:0.014092:0.020451:0.012833:0.014092:0.005536:0.012833:0.014092:0.013245:0.005536:0.012833:0.014092:0.007320:0.020451:0.012833:0.007320:0.010589:0.006359
depend on plants for their food. Besides producing food, soil also acts as a home to :@0.073529:0.607895:0.947610:0.607895:0.947610:0.586772:0.073529:0.586772:0.013245:0.011552:0.013245:0.011552:0.014092:0.013245:0.006016:0.011552:0.014092:0.006016:0.013245:0.007320:0.012833:0.014092:0.009013:0.010706:0.006016:0.007732:0.011552:0.010271:0.006016:0.009013:0.014092:0.011552:0.007320:0.010271:0.006016:0.007732:0.011552:0.011525:0.013245:0.006474:0.006016:0.016631:0.011552:0.010706:0.007320:0.013245:0.011552:0.010706:0.006016:0.013245:0.010271:0.011552:0.013245:0.014092:0.010271:0.007320:0.014092:0.012399:0.006016:0.007732:0.011552:0.011552:0.013245:0.006474:0.006016:0.010706:0.011552:0.007320:0.007320:0.006016:0.012833:0.007320:0.010706:0.011552:0.006016:0.012833:0.010271:0.009013:0.010706:0.006016:0.012833:0.010706:0.006016:0.012833:0.006016:0.014092:0.011552:0.020451:0.011552:0.006016:0.009013:0.011438:0.006359
a variety of insects and animals.:@0.073529:0.634411:0.419549:0.634411:0.419549:0.613287:0.073529:0.613287:0.012833:0.006474:0.012399:0.012833:0.010271:0.007320:0.011552:0.009013:0.012399:0.006474:0.011552:0.007732:0.006474:0.007320:0.014092:0.010706:0.011552:0.010271:0.009013:0.010706:0.006474:0.012833:0.014092:0.013245:0.006474:0.012833:0.014092:0.007320:0.020451:0.012833:0.007320:0.010706:0.006359
F:@0.083808:0.693000:0.097403:0.693000:0.097403:0.670644:0.083808:0.670644:0.013595
ormation Of Soil:@0.105757:0.692803:0.309286:0.692803:0.309286:0.670447:0.105757:0.670447:0.015974:0.010405:0.023948:0.014065:0.010170:0.007425:0.015974:0.015817:0.007216:0.019817:0.010013:0.007216:0.014667:0.015974:0.007425:0.007425
The development of soil is a slow process as it takes hundreds of years to form just :@0.073529:0.725067:0.947589:0.725067:0.947589:0.703943:0.073529:0.703943:0.015373:0.014092:0.011552:0.005673:0.013245:0.011552:0.012399:0.011552:0.007320:0.011552:0.013245:0.020451:0.011552:0.014092:0.009013:0.005673:0.011552:0.007732:0.005673:0.010706:0.011552:0.007320:0.007320:0.005673:0.007320:0.010706:0.005673:0.012833:0.005673:0.010706:0.007320:0.011552:0.017912:0.005673:0.013245:0.010271:0.011552:0.010271:0.011552:0.010706:0.010660:0.005673:0.012833:0.010706:0.005673:0.007320:0.009013:0.005673:0.009013:0.012833:0.013680:0.011552:0.010706:0.005673:0.014092:0.014092:0.014092:0.013245:0.010271:0.011552:0.013245:0.010706:0.005673:0.011552:0.007732:0.005673:0.012399:0.011552:0.012833:0.010271:0.010706:0.005673:0.009013:0.011552:0.005673:0.007732:0.011552:0.010271:0.020451:0.005673:0.006886:0.014092:0.010706:0.008896:0.006359
1cm of soil. Natural agents such as the heat of the sun, strong winds and flowing :@0.073529:0.752845:0.947571:0.752845:0.947571:0.731721:0.073529:0.731721:0.012833:0.010271:0.020451:0.006794:0.011552:0.007732:0.006794:0.010706:0.011552:0.007320:0.007320:0.006474:0.006794:0.018758:0.012833:0.009013:0.014092:0.010271:0.012833:0.007320:0.006794:0.012833:0.012399:0.011552:0.014092:0.009013:0.010706:0.006794:0.010706:0.014092:0.010271:0.014092:0.006794:0.012833:0.010706:0.006794:0.009013:0.014092:0.011552:0.006794:0.014092:0.011552:0.012833:0.009013:0.006794:0.011552:0.007732:0.006794:0.009013:0.014092:0.011552:0.006794:0.010706:0.014092:0.014092:0.006474:0.006794:0.010706:0.009013:0.010271:0.011552:0.014092:0.012399:0.006794:0.017912:0.007320:0.014092:0.013245:0.010706:0.006794:0.012833:0.014092:0.013245:0.006794:0.007732:0.007320:0.011552:0.017912:0.007320:0.014092:0.012287:0.006359
water break the big rocks into small pieces leading to the formation of soil. This :@0.073529:0.780623:0.947621:0.780623:0.947621:0.759499:0.073529:0.759499:0.017912:0.012833:0.009013:0.011552:0.010271:0.007652:0.012833:0.010271:0.011552:0.012833:0.013680:0.007663:0.009013:0.014092:0.011552:0.007663:0.012833:0.007320:0.012399:0.007663:0.010271:0.011552:0.010271:0.013680:0.010706:0.007663:0.007320:0.014092:0.009013:0.011552:0.007652:0.010706:0.020451:0.012833:0.007320:0.007320:0.007652:0.013245:0.007320:0.011552:0.010271:0.011552:0.010706:0.007652:0.007320:0.011552:0.012833:0.013245:0.007320:0.014092:0.012399:0.007652:0.009013:0.011552:0.007663:0.009013:0.014092:0.011552:0.007652:0.007732:0.011552:0.010271:0.020451:0.012833:0.009013:0.007320:0.011552:0.014092:0.007663:0.011552:0.007732:0.007652:0.010706:0.011552:0.007320:0.007320:0.006474:0.007663:0.015373:0.014092:0.007320:0.010587:0.006359
process is called :@0.073529:0.808401:0.251709:0.808401:0.251709:0.787277:0.073529:0.787277:0.013245:0.010271:0.011552:0.010271:0.011552:0.010706:0.010706:0.006474:0.007320:0.010706:0.006474:0.010271:0.012833:0.007320:0.007320:0.011552:0.013245:0.006359
weathering:@0.251820:0.810433:0.388824:0.810433:0.388824:0.787135:0.251820:0.787135:0.020451:0.013245:0.014092:0.009859:0.015784:0.013245:0.011987:0.008578:0.015784:0.013977
.:@0.388946:0.808401:0.395305:0.808401:0.395305:0.787277:0.388946:0.787277:0.006359
The roots of plants  grow and penetrate the rocks to break them into small particles. :@0.073529:0.845269:0.947569:0.845269:0.947569:0.824145:0.073529:0.824145:0.015373:0.014092:0.011552:0.004278:0.010271:0.011552:0.011552:0.009013:0.010706:0.004278:0.011552:0.007732:0.004278:0.013245:0.007320:0.012833:0.014092:0.009013:0.010706:0.004278:0.004278:0.012399:0.010271:0.011552:0.017912:0.004278:0.012833:0.014092:0.013245:0.004278:0.013245:0.011552:0.014092:0.011552:0.009013:0.010271:0.012833:0.009013:0.011552:0.004278:0.009013:0.014092:0.011552:0.004278:0.010271:0.011552:0.010271:0.013680:0.010706:0.004278:0.009013:0.011552:0.004278:0.012833:0.010271:0.011552:0.012833:0.013680:0.004278:0.009013:0.014092:0.011552:0.020451:0.004278:0.007320:0.014092:0.009013:0.011552:0.004278:0.010706:0.020451:0.012833:0.007320:0.007320:0.004278:0.013245:0.012833:0.010271:0.009013:0.007320:0.010271:0.007320:0.011552:0.010706:0.006359:0.006359
Burrowing animals also break rocks into smaller pieces. These small pieces further :@0.073529:0.873047:0.947640:0.873047:0.947640:0.851923:0.073529:0.851923:0.016631:0.014092:0.010271:0.010271:0.011552:0.017912:0.007320:0.014092:0.012399:0.004598:0.012833:0.014092:0.007320:0.020451:0.012833:0.007320:0.010706:0.004598:0.012833:0.007320:0.010706:0.011552:0.004598:0.012833:0.010271:0.011552:0.012833:0.013680:0.004598:0.010271:0.011552:0.010271:0.013680:0.010706:0.004598:0.007320:0.014092:0.009013:0.011552:0.004598:0.010706:0.020451:0.012833:0.007320:0.007320:0.011552:0.010271:0.004598:0.013245:0.007320:0.011552:0.010271:0.011552:0.010706:0.006474:0.004598:0.015373:0.014092:0.011552:0.010706:0.011552:0.004598:0.010706:0.020451:0.012833:0.007320:0.007320:0.004598:0.013245:0.007320:0.011552:0.010271:0.011552:0.010706:0.004598:0.007732:0.014092:0.010271:0.009013:0.014092:0.011552:0.010159:0.006359
disintegrate into small sized, fine textured particles called :@0.073529:0.900825:0.715585:0.900825:0.715585:0.879701:0.073529:0.879701:0.013245:0.007320:0.010706:0.007320:0.014092:0.009013:0.011552:0.012399:0.010271:0.012833:0.009013:0.011552:0.008350:0.007320:0.014092:0.009013:0.011552:0.008350:0.010706:0.020451:0.012833:0.007320:0.007320:0.008350:0.010706:0.007320:0.011118:0.011552:0.013245:0.006474:0.008350:0.007732:0.007320:0.014092:0.011552:0.008350:0.009013:0.011552:0.012399:0.009013:0.014092:0.010271:0.011552:0.013245:0.008350:0.013245:0.012833:0.010271:0.009013:0.007320:0.010271:0.007320:0.011552:0.010706:0.008350:0.010271:0.012833:0.007320:0.007320:0.011552:0.013245:0.006359
sand:@0.717531:0.902858:0.774217:0.902858:0.774217:0.879560:0.717531:0.879560:0.011552:0.014092:0.015784:0.015258
. In this way, a :@0.774329:0.900825:0.947544:0.900825:0.947544:0.879701:0.774329:0.879701:0.006474:0.008350:0.009425:0.014092:0.008350:0.009013:0.014092:0.007320:0.010706:0.008350:0.017912:0.012833:0.012399:0.006474:0.008350:0.012719:0.006359
thin layer of soil is created. The remains of dead plants and animals are broken :@0.073529:0.928603:0.947594:0.928603:0.947594:0.907479:0.073529:0.907479:0.009013:0.014092:0.007320:0.014092:0.007824:0.007320:0.012833:0.012399:0.011552:0.010271:0.007824:0.011552:0.007732:0.007824:0.010706:0.011552:0.007320:0.007320:0.007824:0.007320:0.010706:0.007824:0.010271:0.010271:0.011552:0.012833:0.009013:0.011552:0.013245:0.006474:0.007824:0.015373:0.014092:0.011552:0.007824:0.010271:0.011552:0.020451:0.012833:0.007320:0.014092:0.010706:0.007824:0.011552:0.007732:0.007824:0.013245:0.011552:0.012833:0.013245:0.007824:0.013245:0.007320:0.012833:0.014092:0.009013:0.010706:0.007824:0.012833:0.014092:0.013245:0.007824:0.012833:0.014092:0.007320:0.020451:0.012833:0.007320:0.010706:0.007824:0.012833:0.010271:0.011552:0.007824:0.012833:0.010271:0.011552:0.013680:0.011552:0.013979:0.006359
12:@0.155011:0.168619:0.206438:0.168619:0.206438:0.129917:0.155011:0.129917:0.025713:0.025713