1.

1. In summer tiny oysters are collected. P. Then each oyster is taken out and a small hole is drilled in its shell. Q. There they are kept for three years. R. A tiny piece of sand is put inside the oyster.S. They are placed in trays and planted in the sea. 6. Then the oysters are again left in the sea.

A. QSPR
B. SQPR
C. RPSQ
D. PSRQ
Answer» C. RPSQ


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