126 lines
4.2 KiB
Plaintext
126 lines
4.2 KiB
Plaintext
E 5
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501]. AND WATER ELEMENTS
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ol irie ma known elemenis, nnly some are mmmnnly
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deali nrih in rheliieramreensnilsand waier Soil iisell
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is pnduminanily eornposed ul aluminium, silien, iron,
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and on eeriain shell, sand, nr limesmne areasi ealrium
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Only inmeral rue depnsris have lavgi‘ duaniines nl
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uiher elemems
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The mudiliei lurm ol ihe perrodie inlale is inven in
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ilie eenrreluld ul ihe riiluur seriinn and a mere
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cxlznsn'r annolalian on speeilie elemenis is given in
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Table 8.] ii is esseniial ihni designers in any lield have
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a basie knunledge ul nuinenls, poisons, and ldlerable
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or essennnl levels nl irare elemenis in mod warer, and
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rhr- hiiili Cm‘lmnmem
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The henlili ol planls, anrmals, and ilie enrrrdnmeni
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ol sorls and uuildings are all dependent on ihe balame
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ol elemenis, radinarirve suueianees, radraiidn
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generally, and waier qualiiv. ol pariieular eaneei-ii in
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maul limes is ihe level or radrriariiyes in elays, uneks,
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palms, and nine. and unih ine emissions lrom
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domes-i appliances (TV, microwave ovens» and
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mlcmwave iadiairon lioru rv iransmission and pnwer
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lines
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1-nu she annoaanans in male ad cm'cr a range a!
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iopies, ineludrng shore eornrnenls nn human henllh ln
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ihis ease we are using ihe penndir iaule noi as an aid in
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ehernisiry bu| as a g de lo undersranding ine rule nl
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ihe elemenis in soil, water, planis and anrmal iissue,
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and nuiriridn.
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nie eulrrursedrng and ilie dens mi ilie penudie lalale
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laee unkefnld). plus me lullnwing annaiauans ul
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flEfllE a 1
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JAN Mmon
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ulmnq minesml iumoosilun, usaiiil lordsasrlmun. vnrwi
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mid hack-alum wum suilmnle is shalun in waur ind flawed in
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slanduniillaynslunn (lezndayii 1h- volume oi aaah imiun
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dlkmlmsusesmfl ale-lurrelissiliaaiiun me mum ll
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elemenis give some 0! men known elled: nn soil
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plani, and animal healrh, or iheir speeial uses,
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8.6
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PRIMARY NUTRIENTS FOR PLANTS
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Salk are alien analysed as delieieni in linih mos
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PHATES and POTASH in hardy learhed areas
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phosphaies are supplied eiiher by guann laird
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mannresi lrnm drv islands, nr lruin older deposiis
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loulld in sedimeniary ruelr Polish oerurs in ilie
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mineral leainue, lormed in areas ol evaporaied waiers.
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Deserr salis usually eoniains zue % parash
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l-nusphaiir mtk l) resirieied m disiriuuiion, and
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«warns 345% Phosphorus in various rumlainaiions
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Willi oxygen or Main lnydraredi There are large
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reserves ni potash in common minerals like orihoelase
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la mapr ennsinueni rii granilel
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NITROGEN an be supplred by waior in land plants
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indeulaied wilh rhlwbu. dr liaed lay algae and waler
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plains sum as Serrnvs nr Axnlla We ean ereale ihe
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eondi 'nns lur lining niirogen by growing ihese
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numgenrllxmg plums, ineieulared wuh ihe appropriale
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rniauuia Mueli higher levels ol niirugen rhan were
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prevruualy inaughi id be available are lined by land
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plan, in a series or aenes eriending lrum ihe rools
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Even alier ninugennus planis surh as Ararla. Album,
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and Elrnxlllu are eui. ilie rudr aane wfll eonlinue id
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release niirogrn liar up lo a years, so rhai pioneer
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legumes ur nilrugennus irees serve as ediver crop liar
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liees. and release niiiogen during iheir lrienmes and
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lor some years alier legumes may nor be needed in
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older loresis, and rypirally die um under eannpv Only
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a lew larger leguminens irees isanuiiru, Arnrm
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mllmmxylall) peisrsi as loresi irees in a mlxzd lures .
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aoih phmphak leonreniraied by fiddling uudsl
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and porash {from bur-m and rolled planis or composil
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(in lae ldrally produced il lands are plenlu‘ul and iheir
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nianures are used. The phesphales nnned irum marine
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guano, however, may eaniain eoneeniraied levels ol
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eadinium and uranium, eilher or udih ui which land
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diher heavy memlsi an be nken up lay ihe ueeanie lish
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and snslliish used hy marine bird colonies cdniinual
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heavy use ol surn resairrres is likely lo became
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pulluung I0 sulls Our only elhreal snaiegy is io use
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iusi enangh or ihese resourees, and lo rdnserve ihein
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ideally,
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SOURCE OF MINERALS IN sou
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m3.»
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li makes sense io assume ahai as sons are leaelied, and
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so made mmuilrpnor, ihese minerals laier become
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indie romenlnlzd in iiie sea, in marine organisms, or
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in inland salipana. Seaweeds, reagrasses, and fish
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residues have always bun pan ol agrieuliural
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lern isers, and have mamiained ineir plane even in
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187
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