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The school Board on the background of mathematical equations and formulas. Hand-drawn diagrams and graphs. Background. Doodle. Vector illustration modern design template.
asian male farmer working in farm To collect data to study and develop his farm to improved productivity in the future.Good farming Theory of Asia.Smart Farming Concept.
Concept theory and practice, technical innovation. Vector linear icon isolated on white background.
A judge's gavel lies in front of a group of human figures. Legal decision, laws for society. Manipulation, control of human beings by limiting the power of law. Conspiracy theory, discipline.
Curved spacetime. In the general theory of relativity, as shown here, masses distort four-dimensional space-time. Physics. Tunnel or wormhole over curved spacetime.

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