Read the following Assertion (A) and Reason (R) and choose the correct option.

Assertion (A): People can easily float on the surface of water of Dead Sea even if they do not know to swim.

Reason (R): Dead Sea has 300 gm of salt in one litre of water making it, the sea having highest salt concentration.

The average salinity of seawater is ___________

The collection of rainwater for future use is called

The cold layer extending up to the ocean floor is called

What is the main reason for the depletion of groundwater levels?

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?

Pneumatophores are present in

Hydrosphere includes ___________

Water has its maximum density at?

A technique of watering plants by making use of narrow tubing which delivers water directly to the base of the plant is called