Before revision: Geophysics () is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, عارفك و هاجيبك يالي بتذاكر من ويكيبيديا and the use of quantitative methods for their analysis.
After revision: Geophysics () is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis.