agreement, among, behaviour, damage, development, disagree,
disagreement, disappear, disbelieve, discomfort, dishonest, dump,
Dutch, Dutchman, Dutchwoman, endanger, enjoyment, environment,
extinct, factory, habitat, herself, himself, influence, itself, law,
member, movement, myself, natural, nature, necessary, nowadays,
number, ourselves, payment, person, pollute(d), pollution, pour,
protect(ion), recycle, responsible, save, study, survive, themselves,
unpolluted, waste, yourself, yourselves