Samples of the mineral pyroxene normally exhibit HARDNESS OF 5 TO 6.
Pyroxenes are a group of rock forming minerals, which are found in both igneous and metamorphic rocks. The mineral is composed of many elements including: sodium, iron, magnesium, calcium, manganese, zinc, lithium and other smaller ions. They are also usually found in volcanic lava.
Biological hazards are substances that pose a threat to living things.
~ThePirc
I believe the answer to this is Black Plague.
The black plague or the black death as some people like to call it was transferred to the people by rodents who had it, they would get black death from fleas that were already sick. This spread throughout England and France.
Hope this helped :)
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Answer:
These “higher level” brain areas are most likely related to three different cognitive processes inherently part of synaesthesia: the sensory processes (with the sensory areas), the attentional processes especially controlling the binding process (within the parietal lobe), and the cognitive processes.
