Questions & Answers about Insektoj vivas inter la folioj.
In Esperanto, -j marks the plural.
- insekto = an insect
insektoj = insects
- folio = a leaf
- folioj = leaves
So both nouns are plural here.
The ending -as shows the present tense in Esperanto.
- vivas = lives / live
- vivis = lived
- vivos = will live
- vivi = to live
Because the sentence describes what insects do now or generally, Esperanto uses vivas.