<span>It is linear, because using the VSEPR theory, when you draw its lewis structure, you get two bonded pairs of electrons, which signifies a linear structure.</span>
This is because elements are pure substances with only one atom. When two or more elements are combined, you get compound elements; which allows for more substances to be created.
Its defensive, warning coloration is bright colors. Such as poisonous dart frogs, they are brightly colored in order to warn predators they are poisonous