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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?
Answers: 2
Biology, 23.06.2019 02:30
Wind and moving water provide what kind of energy? a. chemical b. mechanical c. thermal d. none of the above
Answers: 2
Biology, 23.06.2019 10:40
Asingle strand of dna helix consists of 100 nitrogenous base pairs. on one strand, 36 of the bases are adenine and 24 are cytosine. for the complementary strand of dna, which would complete the proper base pairing? 36 guanine 36 thymine 24 cytosine 24 thymine
Answers: 1
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