Nonstandard as written; likely intended to mean “because of a change in …, strange …”
→ の
phraseRare#23,409
Nonstandard as written; likely intended to mean “because of a change in …, strange …”「変」 by itself does not normally mean “change” in this construction. A natural version would use 「変化」, as in 「環境の変化で変な虫が増えた。」 The example below preserves the requested wording but is not standard Japanese.
JA: 環境の変で変な虫が増えた。
EN: Because of a change in the environment, strange insects increased. (Nonstandard Japanese wording.)