彼、人口の増加が社会問題になってる

N5 彼 kare he N4 人口 jinkou population, number of people N3 増加 zouka increase, growth, addition N4 社会 shakai society N5 問題 mondai problem, question

N3 彼 hi / kare, kano, ka.no he, that, the N5 人 jin, nin / hito, -ri, -to person, être humain, personne N4 口 kou, ku / kuchi mouth, bouche, boca N3 増 zou / ma.su, ma.shi, fu.eru, fu.yasu increase, add, augment N3 加 ka / kuwa.eru, kuwa.waru add, addition, increase N4 社 sha / yashiro company, firm, office N4 会 kai, e / a.u, a.waseru, atsu.maru meeting, meet, party N4 問 mon / to.u, to.i, ton question, ask, problem N4 題 dai topic, subject, sujet

N5 〜ている te iru Indicates ongoing action, continuous state, repeated habit, or resulting condition depending on context N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase