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Lead originally came from the earth's crust. It is a natural element. However. it can now be made and manufactured.

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Where did the oxygen in Earth's atmosphere come from originally?

The oxygen in Earth's atmosphere originally comes from the process of photosynthesis carried out by early photosynthetic organisms like cyanobacteria, which released oxygen as a byproduct. Over time, the accumulation of oxygen led to the development of an oxygen-rich atmosphere.


Where did salt originally come from and how has its source evolved over time?

Salt originally came from natural sources such as salt mines and sea water. Over time, the source of salt has evolved to include modern methods of extraction such as salt mines, evaporation ponds, and sea salt harvesting.


What origin does galena come from?

Galena is an ore of lead that is commonly found in hydrothermal veins associated with igneous and metamorphic rocks. It forms through the deposition of lead minerals in these geological environments over time.


Where did the many things on earth that are made of iron originally come from?

Iron found on Earth originally came from supernova explosions in outer space, where heavy elements like iron were formed and later scattered throughout the universe, eventually making their way to Earth through various processes like asteroid impacts.


How does lead come about on Earth?

Lead is a naturally occurring element that is primarily created through the decay of heavy radioactive elements, such as uranium and thorium. It can also be formed through the decay of other elements, such as radon and polonium. Lead can be found in various minerals and ores, and is commonly extracted through mining and refining processes.