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Biology, 21.06.2019 19:30
Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.
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Biology, 21.06.2019 21:10
Using the periodic table, determine which material is most likely a good conductor
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Biology, 22.06.2019 02:30
Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels
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Biology, 22.06.2019 05:00
Explain how organisms could be harmed by high levels of salt from roadways?
Answers: 1
The is the bacterial structure that acts as a selective barrier, allowing nutrients to enter the ce...
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