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Types of boundaries associated with plate tectonic movement include;Extensional boundaries/constructive boundariesCompression boundaries/destructive boundariesConservative boundaries /transform boundaries
Effects of the movement of tectonic plates are;They cause earthquakesCan lead to formation of fold mountainsCan lead to formation of new oceanic crustMay lead to formation of submarine island/volcanic
Sharp shadow support the theory that light travels in straight line because;Sharp shadow is formed by blocking light travelling in a straight line.
Principles of evolution theory are;Environmental mutationNatural selectionIsolationAdaptation
Weakness of the passing star theory are;It fails to explain the original of the sun and the passing starThere are minimal exchange of another star approaching the sun.Materials which were drawn from the sun would have scattered in space rather than condense to form planets.