Where does the salt in the seas and oceans come from?
Common salt, or sodium chloride (ClNa), is mostly extracted from seawater, where it is found in high concentrations, along with …
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Where does Earth’s water come from?
Within the Solar System, the Earth is located very close to the so-called «ice line«, sometimes called the frost line …
Where does the oxygen in the atmosphere come from?
The Earth’s atmosphere is approximately 78% nitrogen and 21% oxygen. The remaining 1% is occupied by other gases, mainly carbon …
Which side does appendicitis hurt?
The appendix is a small dead end tube that appears in the large intestine, near the cecum, on the right …
What are teeth made of?
Teeth can be described as hard organs designed for cutting and grinding food, the most important step in what is …
Difference between allogamy, xenogamy and geitonogamy
Both allogamy and xenogamy are terms used in biology to describe two types of sexual reproduction that differ in the …
Differences between oceanic and continental crust
The Earth’s crust, the outermost layer of the planet, is made up of a layer of solid rock. There are …
Should I take antibiotics for a cold?
The cold, like the flu, is an upper respiratory tract illness caused by a viral infection. The cold is caused …
Is it safe to use arnica during pregnancy?
Many analgesics, both synthetic and natural remedies, are contraindicated during pregnancy and seeking pain relief becomes a difficult task. Many …
Is it true that eating carbs at night makes you fat?
The idea has long been established that eating at night before bed is more fattening than other meals during the …