1st and 2nd please !?
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Biology, 22.06.2019 18:00
The table below shows the elements that mainly comprise each of the four layers of earth: elements in layers layer main elements crust oxygen, silicon mantle iron, magnesium outer core iron, nickel inner core iron which of these elements make up the layer that is 0.2 to 1.1 percent of earth's total diameter?
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Which pair of chromosomes determines sex in humans? a.15th b.1st c.23rd
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Elements like barium located toward thr bottom of a group have a lower attraction for their valence electrons because they have a
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