Sinus hominem has cranial features that include a 1520 cc braincase, and enlarged nose passage for living in cold climates.
There are 4 pairs of sinuses. These are the frontal, maxillary, ethmoid, and sphenoid sinuses (not shown). Blocked sinus openings block the flow of mucus and increase pressure, causing pain and inflammation.
Maxillary Sinus: The largest of the maxillary sinuses, located behind the cheekbone near the cranial features. Sphenoid Sinus: The sphenoid sinus is located in the sphenoid bone near the optic nerve and pituitary gland on the side of the skull.
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They grow distinct crystal shapes because they have a loot of room and their growth and movement is not restricted, which enables them to form in whichever way they can, which is why they are so distinct.
A shortage of food that results in widespread hunger is called famine.
Answer:
A. Obsidian
Explanation:
It fits the property described in the question.
It cools so fast that no visible crystal or grain could form. It has high silica Composition, black and glassy. It is also used to make tools with sharp edges
Both are igneous rocks, but whereas volcanic rocks are formed from cooling lava on the surface, plutonic rocks are formed from cooling magma below the surface. So plutonic rock is an igneous intrusive rock, while volcanic rock is extrusive.
