yomujp.com/tag/nature/
A collection of graded reading materials about nature topics for Japanese learners, organized by JLPT level from N5 to N2, with furigana and explanations of language and cultural references.
Reading practiceVocabularyIn JapaneseGraded readersCultureJLPT N2JLPT N5ConditionalsJLPT N4Dictionaries