The cradle of mankind, why do most parts of Africa not dig wells to get water?
When the Creator created mankind, he may have forgotten to check the quality, so that when man came to this earth, he always had to …
Tag: water
20% of the world’s groundwater wells may be depleted
The reason why life on earth has appeared and survived is mainly due to the basic conditions for life on earth, such as oxygen, water, …
Water is obviously colorless and transparent. Why can we see the existence of water?
Have you ever thought about such a question: Water is clearly transparent, but why can we still see the existence of water? To understand this …