Answer:
No it hasn't been recommended by a doctor.
Explanation:
This is considered pseudoscience because there is no proof that it has been scientifically proven.
Answer: These animals eat algae in the water.
Explanation: They clean the water in other words.
Answer:
Explanation:more details please
Answer:
<em>Ultraviolet is a form of electromagnetic radiation with wavelength from 10 nm to 400 nm, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. </em>
