Insects are invertebrates,or animals without backbones.They breathe air through holes in their bodies.The body of an insect has three main parts called the head,thorax,and abdomen.
Insects go through life stages and have very different forms in each stage.Adult insects usually have three pairs of legs,one pair of antennae,and two pairs of wings.
Insects are small animals.You could barely see the feathery winged dwarf beetle because it is only 1t inch (0.25millimeters)long.The walkingstick of Southeast Asia is one of the biggest insects.It can be 20inches (50centimeters)long with its legs stretched out.
An insect does not have bones.Its body has a hard outer covering.The hard covering is called an exoskeleton,or external skeleton.
Where Do Insects Live?