理科

1. Origins, structure, and basic meaning

• Structure: 理科, read りか, denotes the school science subject covering natural phenomena and living things.
• Basic usage: It names the school subject in which leaves are observed and which a student prefers to language arts.

2. Common pitfalls and similar expressions

• School science as a subject
  • It is the school subject for studying nature and living things, rather than the whole enterprise of science.