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Match it! Select the correct answer from the pull down...Good luck!

What is earth's inner core made of?

a reflector helps people in cars see a bicycle when it is dark. How do bicycle reflectors work?

what type of rock forms from the deposition of material at the earth's surface?

A student flips a light switch but the light does not turn on. Based on this information which inference is not valid?

which of the following determines a year?

A pure substance made up of one type of atom is

Which of the following is an example of a physical change?

which is not an example of a symbiotic relationship?