Modifiers matching challenge:

• systemic,
• regional,
• complex,
• global,
• societal,
• minor,
• everyday,
• educational,
• common,
• technical,
• world,
• social,
• broad,
• future,
• major,
• political,
• unexpected,
• musical,
• organizational,
• individual,
• technological,
• national,
• serious,
• environmental,
• urban,
• severe,
• personal,
• internal,
• mental,
• unfamiliar,
• professional,
• behavioral,
• new,
• extra,
• economic,
• operational,
• local,
• physical,
• key,
• immune,
• administrative,
• phonological,
• developmental,
• special,
• structural,
• big,
• ongoing,
• basic,
• complicated,
• legal,
• several,
• healthy,
• interpersonal,
• international,

Simple categories matching environmental:

• limitation,
• investigation,
• condition,
• surface,
• contact,
• trouble,
• difficulty,
• machinery,
• treasure,
• hazard,
• tax,
• contaminant,
• event,
• preservation,
• challenge,
• predator,
• debris,
• constraint,
• object,
• harm,
• values,
• project,
• disaster,
• regulation,
• sensation,
• change,
• disorder,
• activity,
• marker,
• movement,
• material,
• issue,
• resource,
• duty,
• behavior,
• consideration,
• space,
• attack,
• report,
• coating,
• form,
• device,
• print,
• status,
• development,
• process,
• flow,
• interaction,
• job,
• benefit,
• elements,
• chemical,
• use,
• management,
• phenomenon,
• antigen,
• malady,
• asset,
• effect,
• test,
• stone,
• fomite,
• occurrence,
• division,
• tragedy,
• obstacle,
• model,
• conflict,
• trait,
• zone,
• contamination,
• organization,
• theme,
• testing,
• assay,
• state,
• thought,
• subject,
• structure,
• educator,
• indicator,
• catalyst,
• knowledge,
• calamity,
• obstruction,
• plan,
• solid,
• piece,
• muffler,
• characteristic,
• statute,
• matrix,
• sampling,
• light,
• ngo,
• assets,
• belief,
• company,
• pickup,
• expense,
• analysis,
• catalysis,
• care,
• security,
• expert,
• tension,
• audio,
• technique,
• odour,
• conservation,
• modification,
• business,
• whole,
• substrate,
• threat,
• alteration,
• niche,
• game,
• microbe,
• carcinogen,
• information,
• layer,
• microorganism,
• streptococcus,
• perturbation,
• deed,
• works,
• receptor,
• fact,
• field,
• tool,
• policy,
• repair,
• adaptation,
• action,
• biotechnology,
• reservoir,
• output,
• concentration,
• user,
• data,
• measurement,
• dimension,
• practice,
• agency,
• rehabilitation,
• item,
• design,
• simulation,
• influence,
• scheme,
• detector,
• instrument,
• allergen,
• cd,
• industry,
• selection,
• variation,
• economist,
• text,
• communication,
• engineering,
• study,
• scan,
• product,
• facility,
• barrier,
• degradation,
• fee,
• document,
• sustainability,
• professional,
• painting,
• failure,
• education,
• situation,
• cue,
• stressor,
• location,
• requirement,
• control,
• stuff,
• footprint,
• problem,
• resistance,
• interference,
• signal,
• organism,
• injury,
• politics,
• review,
• damage,
• measure,
• agreement,
• point,
• aspect,
• work,
• catastrophe,
• danger,
• meeting,
• disease,
• initiative,
• toxin,
• agent,
• science,
• time,
• trauma,
• medium,
• discomfort,
• stewardship,
• equipment,
• body,
• substance,
• efficiency,
• hydraulics,
• commodity,
• toxicology,
• message,
• arrangement,
• cause,
• support,
• fluctuation,
• fixture,
• pathogen,
• sensor,
• poison,
• consultant,
• unit,
• input,
• fluid,
• parameter,
• power,
• gradient,
• noise,
• toxicant,
• infrastructure,
• commitment,
• tolerance,
• force,
• service,
• specialty,
• consequence,
• odor,
• improvement,
• standard,
• aggression,
• chemistry,
• waste,
• scene,
• sound,
• constituent,
• pressure,
• cleaning,
• fuel,
• grouping,
• pest,
• circumstances,
• designer,
• variable,
• task,
• area,
• advisor,
• organisation,
• protection,
• fabric,
• recovery,
• ligand,
• law,
• bacteria,
• directive,
• health,
• topic,
• hepatotoxin,
• cost,
• touch,
• discipline,
• heritage,
• region,
• shift,
• water,
• sample,
• installation,
• profession,
• pollution,
• property,
• disturbance,
• system,
• mixture,
• employment,
• insult,
• matter,
• weather,
• specialist,
• pollutant,
• idea,
• compound,
• thing,
• impurity,
• performance,
• difference,
• effort,
• factor,
• enhancement,
• sensitivity,
• tissue,
• stress,
• program,
• feature,
• entity,
• exposure,
• scientist,
• source,
• stimulation,
• technology,
• experience,
• component,
• stimulus,
• mineral,
• therapy,
• gas,
• goal,
• institution,
• metal,
• dynamics,
• utility,
• illness,
• group,
• quality,
• liquid,
• incident,
• torque,
• clue,
• impact,
• level,
• attribute,