Biology · Oct / Nov 2020 · Paper 22 · Question 4
5090
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The question as text
Hydroponics is a technique used to grow plants without soil. The diagram shows plants being grown using hydroponics. light source nutrient solution supply to plants nutrient solution growing tray plant timer air pump air stone nutrient solution pump
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4(a)[2]
4(b)(i)[4]
4(b)(ii)[1]
4(b)(iii)[1]
4(c)(i)[1]
4(c)(ii)[4]
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