Density = mass/volume
X = 10/50
X=.2
Answer: <em>species diversity
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<em>ecosystem diversity
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<em>genetic diversity</em>
your body and nature is about human life
<u>The outer core of the Earth is a liquid layer and it is mainly made up of the metals iron and nickel. </u>
<u>It's also made up of small amounts of other substances. </u>
<u>The outer core is responsible for Earth's magnetic field. </u>
<u>The outer core is the second layer of the Earth.</u>
