The elements are substances that cannot be broken down into other matter by chemical means, and an atom is the fundamental particle in an element. As of 2001, there were 112 known elements, 88 of which occur in nature; the rest were created in laboratories. Due to their high levels of radioactivity, they exist only for extremely short periods of time. Whatever the number of elements—and obviously that number will increase over time, as new elements are synthesized—the same number of basic atomic structures exists in the universe.
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There are various arthropods in the world. The arthropods that have wings are identified as insects, and they only have two pairs if wings, which is four.
Insects have two pairs if wings, 2 on the higher part of an insects body and 2 lower ones. It some cases insects lack back wing's.
That being said, winged arthropods(insects) don't always have 2 pairs of wings. The amount of wings varies on the type of insect.
No hair = no lice!
lice like hair and warm places.
