english: Others, including air pollutants, are much harder given their ubiquity or lack of available alternatives. And, as Maureen Swanson notes, such choices are not necessarily feasible for people at all economic levels, which raises environmental justice issues.
non_english: Anak-anak yang memiliki IQ yang kurang juga menunjukkan kesulitan dengan memori kerja, penalaran perseptif dan kecepatan memproses informasi.