Ultrasound occurs naturally in various environments, such as in the sounds produced by animals like dolphins and bats, which use ultrasonic frequencies for echolocation. Additionally, natural phenomena such as earthquakes generate ultrasonic waves that can be detected. Certain geological processes and atmospheric events, like lightning, can also produce ultrasonic sounds.
Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.
in there native state
Astatine is an element that does not occur naturally in large quantities on Earth.
94 kinds of atoms occur naturally on earth
Yes, radio waves occur naturally in the environment as a form of electromagnetic radiation.
boron
it dont
yes,it does
yes
NO!!! It does not occur naturally. However, its mineral ores are very common. e.g. Haematite, Magnetite.
"Synthetic" could be another word for something that does not occur naturally.
it occurs naturally in grapes, bananas and tamarinds