Word family C
1. investigative 2. investigate 3. investigation 4. investigator
Word family E
1. toxicity 2. toxic 3. toxically 4. toxins
Word family B
1. desired 2. desire 3. desire
Word family A
1. absorbent 2. absorption 3. absorb
Word family D
1. theorize 2. theoretically 3. theoretical 4. theory