A. Personal Safety Every student and teacher should be protected by safety devices when experiments are being conducted in the biology laboratory.
(A. Personal Safety Every student and teacher; should be protected; by safety devices; T:when experiments are being conducted in the biology laboratory) (experiments; are being conducted; L:in the biology laboratory)
A. Personal Safety Every student and teacher experiments
should be protected are being conducted
by safety devices T:when experiments are being conducted in the biology laboratory
L:in the biology laboratory