Supply each blank with ONE suitable word to make a meaningful passage. (20 pts)
Ants are common insects, but they have some unique capabilities including their legendary communication skills that allow their colonies to (1) as superorganisms. There are more than 10,000 known species of ants living throughout the world. Ants can be (2) by the constriction that looks like a waist (3) the abdomen, at the end of the body, and the part of the body called the thorax. Their bodies are covered with a hard armour called the exoskeleton.
While the exoskeleton is their (4) weapon, their rear abdominal stinger is their offensive one. Like other insects, they have six legs; each (5) three joints. Queen ants are the largest ants in the (6) . Their purpose is to lay eggs and they can live up to 30 years. There may be one or more queens, which depends on the ant species and the nest community (7) . The ant life cycle has four stages: egg, larva, pupa and (8) . The helpless larvae are fed and groomed by the worker ants (9) they pass through the pupal stage. In a little more than a week, an adult ant will emerge, and the metamorphosis is (10) .