Final answer:
The top worldwide use of water is for agriculture, accounting for 70% of human water consumption. A significant portion is also used in industry, particularly in developed countries, while the concept of virtual water plays a role in global water usage through international trade.Option 4 is the correct answer.
Step-by-step explanation:
The top use of water worldwide is for agriculture. Seventy percent of the water used by humans globally is for agricultural purposes. This encompasses the irrigation of crops, which is essential for food production, especially in developing regions where the percentage of water used for agriculture is even higher.
On the other hand, affluent countries have a higher proportion of water used in industrial processes due to manufacturing and production demands.
It is also important to recognize that water usage is not solely for direct application but also indirectly through the concept of virtual water. This refers to the water embedded in products that are traded internationally, thus contributing to the global flow of water usage without necessarily being consumed in the country of origin.
When discussing water use, it is crucial to consider not just individual consumption, but also the broader environmental and economic impacts of water used in industries and agriculture.