Question

The branch of Earth science that deals with 70 percent of Earth’s surface is

Answer 1

Oceanography

Step-by-step explanation:

Oceanography is the study of everything in the ocean environment, which covers about 70% of the Earth's surface (Figure below).

Geology is one branch of Earth science. Geology is the study of the origin, history, and structure of Earth. It also includes the study of the processes that shape Earth. A scientist who studies geology is called a geologist.