Answer:
They use ultrasound waves and chemicals combined to create bubbles that "cling" to the foreign particles such as dirt, oil, and unknown substances.
Explanation:
Ultrasonic cleaners are useful for jewelry cleaning and removing tarnish. They use ultrasound waves and chemicals combined to create bubbles that "cling" to the foreign particles such as dirt, oil, and unknown substances. The high frequency waves are sent out and pull the contaminants off the object.
They are made of only carbon, hydrogyn, and oxygen
hope this helps
Answer:
hematite, also spelled haematite, heavy and relatively hard oxide mineral, ferric oxide (Fe2O3), that constitutes the most important iron ore because of its high iron content (70 percent) and its abundance.
Explanation:
Answer:
Greco-Roman world
Explanation:
The Mediterranean world which comprises of areas around the land regions of the Mediterranean and Black Sea Basins were influenced in various forms such as culture, language and the style of government by the Greeks and Romans.
These people were majorly involved in the civilization of the Mediterranean region. This makes the Mediterranean world to also be called the Greco-Roman world.
