Answer:
arthropoda : invertebrate
mollusca : invertebrate
chordata : vertebrate 
Explanation:
There are 9 in total but those are the main 3 
 
        
             
        
        
        
Answer:
Osmosis.
Explanation:
Osmosis is defined as the passive transport in which net movement of water across the membrane from high water area potential to low water area potential. The membrane is known as selectively permeable membrane moved by a concentration of solute both sides of the membrane.
Selectively permeable membrane is a membrane which is selective in nature that allows unrestricted passage of water molecules, but not solute molecules.
 
        
             
        
        
        
Answer:
Mold fossils	A fossilized impression made in the substrate; a negative image of the organism.
Cast fossils	Formed when a mold is filled in.
Trace fossils or Ichnofossils	Fossilized nests, gastroliths, burrows, footprints, etc.
True form fossils	Fossils of the actual animal or animal part.
 
        
             
        
        
        
First they don't use oxygen, plants use the CO2 in the air and release oxygen out into the air after the plant used up the CO2