पृथ्वी पर उपलब्ध कुल जल राशि का लगभग कितना प्रतिशत भाग स्वच्छ जल या मीठा जल (फ्रेशवाटर) है?

Which of the following represents the largest natural reservoir/source of water on Earth?

Arrange the following sources of the world's water supply in descending order of their volume: 1. Oceans 2. Rivers 3. Polar ice and Glaciers 4. Ground water

Given below are two statements, one labeled as Assertion (A) and the other labeled as Reason (R): Assertion (A): Rivers play a significant role in the water cycle. Reason (R): Rivers always flow exclusively into lakes. Choose the correct option:

Choose the correct option based on the Assertion (A) and Reason (R) given below. Assertion (A): The water of the oceans is salty or saline. Reason (R): Ocean water contains a large amount of dissolved salts, predominantly sodium chloride.

Consider the following statements regarding the hydrosphere: 1. The hydrosphere includes all water bodies on Earth, with oceans and seas being its largest component. 2. The hydrosphere covers approximately 50% of the Earth's surface. Which of the statements given above is/are correct?