The ancient Greeks believed that everything was made up from air, earth, fire and water. The Greeks had no other ways of knowing about the universe and things we now know.
In ancient Greece, this type of covered colonnade was called a stoa. They were usually open-air structures used by the general public.
The 'metu' (pl.) or a 'met' (sing.) are a system of channels or ducts in the body which the Ancient Egyptians believed connected the heart to other parts of the body. There were thought to be 22 metu in total and that they ended at the anus. They are mentioned in the medical papyri (e.g. Ebers Papyrus). It is not understood exactly how to interpret the metu in the light of modern knowledge as they are said sometimes to carry blood and sometimes air and sometimes neither. They were believed to also carry disease in the body and be responsible for illness or infection.
Very little other than goods for sale - the Agora was an open air marketplace.
Jars are hermetically sealed to keep all air out of a container to stop a substance from expiring or going bad. They are often hermetically sealed using heat, once all oxygen is drained out of the jar heat is often applied to make sure that there is no air leaks. Some jars will even contain an oxygen neutralizer or a freshness packet that gets rid of all air that got in after being sealed.
No
No. They had no idea nor the science to figure it out.
Ancient people did not have a scientific understanding of oxygen as a specific element. However, they were aware that air was necessary for breathing and for sustaining life. The discovery and isolation of oxygen as an element occurred in the late 18th century.
People use air for oxygen, without air we would all be dead.
People get oxygen through the air they breathe. Oxygen is present in the Earth's atmosphere, comprising about 21% of the air we inhale. Our bodies extract oxygen from the air and use it to generate energy through a process called cellular respiration in our cells.
ancient Egypt people
Air: 78% nitrogen, 21% oxygen, 1% other. We breathe oxygen and other molecules.
Millions of years ago, there was more oxygen in the atmosphere due to high levels of photosynthesis by ancient plants. These plants absorbed carbon dioxide and released oxygen as a byproduct, leading to higher oxygen concentrations in the air.
people are not safe in space if there air tanks run out of oxygen because there is no air in space.
Oxygen is in the air.
yes they did :)
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