This may take place in the micro level. In macro level, there is no measurable effects

Very interesting question. I guess it is mostly about magnetochemistry. It is obvious that Earth's magnetic field (or any other time independent magnetic field) has a chance to affect chemical reactions only when reacting ions carry non-zero magnetic moment. Yet the magnetic moments of vast majority of ions are fixed. The noticeable exception is Co2+ ion, which may exist in LS (low spin) or HS (high spin state). Does it affect its chemical activity? Perhaps, but I have not seen any such reports yet.

Yehia Alelemy, You have asked: " Does Earth Magnetic Field have direct effect on reactions happens on Earth surface at atomic level?".

My research convinces me that it does. Please see my RG post

25. Strong possibility that a 19.5° angle identified in the latest model of residual refractive-index (RI) percentages, for the magnetic fraction of the gabbroic rock under study, ties this QM work in with relevant Cosmological data. PDF file posted 4 September 2020 at https://tinyurl.com/yxhnydga and https://tinyurl.com/y46jyo9h

and stay tuned for further results when I post my next work log.

With all best wishes for your continuing successes,

-Steve- [email protected] ... https://tinyurl.com/to8tsbt

RAW DATA & Explanations .csv.pdf:

https://www.dropbox.com/s/tk1zqko1ctsasxo/RAW%20DATA%20%26%20Explanations%20.csv%20.pdf?dl=0

Since pointing to my work circa 5 September 2020, I also generated the attached tomographic image of what might be magnetic effects as mapped by heat flow and that might involve mineral twinning ... for all I know. ;-)

All very interesting stuff! :-)

Respectfully, -Steve-

[email protected] ... https://tinyurl.com/to8tsbt

https://www.researchgate.net/publication/346020796_GUIDE_READ_ME_FIRST

RAW DATA & Explanations .csv.pdf:

https://www.dropbox.com/s/tk1zqko1ctsasxo/RAW%20DATA%20%26%20Explanations%20.csv%20.pdf