Nul's Mirror

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https://youtu.be/0R4G0gyFxg8
04/02/2020

https://youtu.be/0R4G0gyFxg8

Biochemical Oxygen Demand (BOD) means, the amount of dissolved oxygen used by microorganisms in the biological process of metabolizing organic matter in wate...

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03/02/2020

đŸ“ĸđŸ“ĸđŸ“ĸ



Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing . Ultrasound is not different from "normal" (audible) sound i...

https://youtu.be/mbaEux0vMkY
02/02/2020

https://youtu.be/mbaEux0vMkY

In scientific terms, water hardness is generally the amount of dissolved calcium and magnesium in water. But in layman's terms, you may notice water hardness...

https://youtu.be/tGnYjb8g4AA
01/02/2020

https://youtu.be/tGnYjb8g4AA

Maintaining biodiversity ultimately helps maintain of human health; many medicines are derived from plants and, recently, animal toxins. People depend on bio...

https://youtu.be/8ceGKMxHuL8
01/02/2020

https://youtu.be/8ceGKMxHuL8

Converting Parts-Per-Million (ppm) to Parts-Per-Billion (ppb) is simple. Why is it simple? Because it only requires one basic operation: multiplication. The ...

31/01/2020

https://m.youtube.com/watch?v=752gUVELddE

A sonic boom is the sound associated with the shock wave created whenever an object travelling through the air travels faster than the speed of sound. Sonic ...

https://m.youtube.com/watch?v=iyM5JTtAfu0
30/01/2020

https://m.youtube.com/watch?v=iyM5JTtAfu0

Biodiversity is the variety and variability of life on Earth . Biodiversity is typically a measure of variation at the genetic , species , and ecosystem leve...

https://m.youtube.com/watch?v=1FRtLJQe3bA
30/01/2020

https://m.youtube.com/watch?v=1FRtLJQe3bA

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