This is true! Minerals were mined both on the surface as well as in mines and caverns underground.
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Answer: A. all</h3>
Every planet in our solar system has been visited by an unmaned spacecraft sent by the United States. The launch years are given in this order
- Venus (1962)
- Mars (1964)
- Mercury (1973)
- Jupiter (1977)
- Saturn (1977)
- Uranus (1977)
- Neptune (1977)
- Pluto (2006)

Should ever come back...Should ever come back....
Plants with a primary root and little lateral roots that extend out from it have a tap root system.
A taproot system, generally found in dicotyledons, is made up a central, large pointed root and this is what is called the taproot.
Smaller roots branch off from the taproot and are known as lateral roots. The tap root is larger in diameter than the lateral roots. Tap roots generally grow much more deeply into the soil compared to fibrous roots.