4.The productivity of crops can be increased by using
_____
a)Radio-iron b)Radio-phosphorus
c)Radio-sodium d)Radio-Iodine
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Answer:
b)Radio-phosphorus
Explanation:
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4.The productivity of crops can be increased by using Radio Phosphorus
a)Radio-iron
✔ b)Radio-phosphorus
c)Radio-sodium
d)Radio-Iodine
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