What natural resource is most needed for humanity?

The answer to this question is unequivocal – water. This is one of those resources, without which it is simply impossible for a person to exist, but at the same time, in his absence, he will not be replaced by anything, unlike other vital resources.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.