I need help on a 250 WORD ESSAY .. argue whether or not you feel it is more important that researchers focus on individual difference or individual similarity in their study of personality development.

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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prndulum needs thread, weight clock to time swings