No. Symbiosis exists with all life forms. For example, the sloth can grow algae (a plant) on its back. The sloth gets a bit of protection and the algae lives (Mutualism.)
A variable that stays the same
CCl₄ - carbon tetrachloride
This molecule has 4 polar bonds, but is non-polar in nature.
:)
Iron-Metal
Boron, Carbon- Same period
Cobalt,Iron- Same family
Hydrogen- smallest atomic number
If C is 20 D should be 21
There not . hmm , well where did u get that information from