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Question
My question is, what is the theory of plate tectonics? How does that action help she the Earth's surface?

Also another one is, how is the earth moon system different now than it was a long time ago when the moon first formed?

Answer
Question # 1 - pl. refer to any geology text book, you would get detailed chapter on Plate Tectonics or Google it on NET.

Question # 2 - Good question, I believe, except for cooling history and orbital adjustments post formation, the moon-earth system has not changed much. They have evolved with rest of the Solar system as  a part of the Universe.

Geology

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N.K.Agarwal

Expertise

Would be happy to answer : General Geology, Engineering Geology, Economic Geology, Geomorphology, Geoenvironment, Tectonics, Natural Resources inclusive of Rocks & Minerals, Exploration, Science Policy etc.

Experience

Geological-Geotechnical Solutions and professional advice. I have over 34 years of professional experience of working as a geologist in diverse mountainous terrain. I have professional skills for planning. programming, executing and monitoring of : (1) Engineering Geological investigations in Hydropower and Developmental projects, (2) Landslide and Disaster Management etc. (3) Natural Resource Management and Programming (4) Geological Mapping (5) Geoenvironmental Management (6) Mineral Exploration (7) Water Resources Management, (8) Integrated Watershed Management, (9) Training on - Natural Resource Management, Geoenvironmental Management, Waste Management, Geohazards, Geotechnical Investigations, Data acquisition & interpretations, (10) R&D Initiatives and Societal issues etc.

Organizations
ex-Geological Survey of India. Retired Director now Geo-Consultant and Advisor -HIGEOS India

Publications
Departmental Publications mostly

Education/Credentials
M.Tech.(Applied Geology), University of Roorkee (now IIT Roorkee).

Past/Present Clients
Worked in the Geological Survey of India for aabout 32 years. Presently - GeoConsultant & Advisor - HIGEOS India

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