21. Rice can grow in water submerged soil because the plants

A. have spongy roots
B. can oxidize the micro-environment around their roots and thus able to absorb oxygen
C. are adapted to enable roots to ward off toxic products
D. all of the above

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22. Who among the following coined the term Biotechnology?

A. Karl Ereky
B. James Clarke
C. Paul Terasaky
D. Clarke and Sommer

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