A niche affects biodiversity because of the special role the organism takes. For example a bluebird might only like to eat brown beetles. That means more and more beetles will die off leaving only lets say brown beetles. That means the biodiversity of beetles will be only brown beetles.Missing: greater bomber
Mercury because it is way too hot to have an atmosphere.
The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules.