What continues to grow throughout their lives? 
potatoes Hemoglobin tortoises plastic  roses. Human teeth. Lilies. Silk daisies. vegetation
A B C D E F G H
Lilies continually produce new bulbs, from which grow new plants.
Lilies continue to grow throughout their lives.
What continues to grow throughout their lives?  (A) potatoes (B) Hemoglobin (C) tortoises (D) plastic  roses. (E) Human teeth. (F) Lilies. (G) Silk daisies. (H) vegetation