Question

1. what are the two main branches of natural science? physical science and life science life science and earth science physics and chemistry physical science and earth science

Explanation:

Natural science is broadly divided into physical science (dealing with non - living matter, e.g., physics, chemistry) and life science (dealing with living organisms, e.g., biology). The option "physical science and life science" correctly identifies the two main branches. The other options either mix sub - branches (like physics and chemistry are sub - branches of physical science) or incorrect combinations (like Earth science is a sub - branch of physical science in some categorizations, but not a main branch alongside physical science as a main division of natural science).

Answer:

A. physical science and life science