The economy is to define it according to primary, secondary and tertiary sectors.
Primary
Sectors<span><span /></span><span><span>Mining and Quarrying </span></span><span /><span><span /></span><span><span>
</span>
<span>
Agriculture, Forestry and Fishing
</span>
<span>
Secondary Sectors
Manufacturing
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Electricity, Gas and Water (utilities)
</span>
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Construction
</span>
<span>
Tertiary Sectors
Finance, insurance, real estate and business services
</span>
<span>
General Government
</span>
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Wholesale, retail, and motor trade; catering and accommodation
</span>
<span>
Transport and communicationsHope it helps
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Is that a stament or question?
I believe B. the material is cooler and denser would be correct.
The colder something is, the more density it has. Earth's core is too hot to be very dense, so that's why I would go with B.
