Category Nuances for null:

• rare,
• aquatic,
• organic,
• dead,
• marine,
• important,
• large,
• invertebrate,
• easy,
• sedentary,
• mobile,
• familiar,
• small,
• benthic,
• animal,
• soft,
• calcareous,
• smaller,
• terrestrial,
• common,
• potential,
• hard,
• lower,
• eukaryotic,
• larger,
• intermediate,
• planktonic,
• simple,
• diverse,
• pelagic,
• active,
• slower,
• moving,
• higher,
• microscopic,
• bodied,
• herbivorous,
• low,
• natural,
• whole,
• interesting,
• developed,
• symmetrical,
• coastal,
• cultured,
• advanced,
• motile,
• predatory,
• heavy,
• primitive,
• tiny,
• intertidal,
• macroscopic,
• main,
• sessile,
• floating,

Simple Categories for null:

• organism,
• metazoan,
• survivor,
• object,
• invertebrate,
• feeder,
• part,
• zooplankton,
• creature,
• animal,
• fauna,
• host,
• item,
• prey,
• eukaryote,
• herbivore,