invertebrates don't have a spine, and lack most bones. They are mainly made of cartilage.
All organic compounds have carbon as a common characteristic.
All producers are plants
The common characteristic shared by all organic substances is that they contain carbon atoms bonded to hydrogen atoms.
none of them dissolves in water
metallic luster
all have cells.
the common agents of erosion is water , to improved
they conduct electricity
Monetary Value
Resemblance resemblance to music
revolution
revolution