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What else i can do and write about Puerto Rico

Which sequence of transformations on preimage ∆abc will not produce the image ∆a'b'c'? a. reflection across the line y = x b. rotation 180° clockwise about the origin followed by a reflection across the line y = -x c. reflection across the x-axis followed by a reflection across the y-axis d. reflection across the line y = -x followed by a rotation 180° counterclockwise about the origin e. reflection across the y-axis followed by a rotation 90° clockwise about the origin

All of the following actions are examples of civil disobedience, except a.) refusing to pay an unfair tax b.) refusing to use government services c.) participating in a protest march d.)planning a riot to destroy a government riot

Who developed the theory of plate tectonics?