Explanation

Salinity in seawater is defined as the total  weight of salt dissolved  in 1 kilogram of seawater.

Salinity is expressed in  g / kg and is often expressed in ppt (parts per 1000) or ‰ (permit).

Explanation

Sea water, water that makes up the oceans and seas, covering more than 70 percent of Earth's surface.

Explanation

 Osmium is a chemical element with the symbol Os and atomic number 76.

Explanation

A normal healthy human breathes about 11,000 litres of air in a day

breath air by the process of breathing                                               

Additional information:

The average adult at rest inhales and exhales something like 7 or 8 liters of air per minute.

Explanation

Indonesia is a country in Southeast Asia and Oceania, between the Indian and Pacific oceans.

 It consists of more than seventeen thousand islands, including Sumatra, Java, Borneo, Sulawesi, and New Guinea.

Explanation

• World Wide Web (WWW)
  
• World-Wide Web Worm (WWWW)

• English scientist Tim Berners-Lee invented the World Wide Web in 1989.

• WWW Birth place CERN near Geneva, Switzerland.

• The browser was released to the general public in August 1991.

Explanation

Like a sitting duck means ignorant.

Like a sitting duck means وہ شخص جو بآسانی زد میں آسکے

Explanation

Sense of time is due to Rotation of earth

وقت کا احساس زمین کی گردش کی وجہ سے ہے۔

Explanation

Borobudur, a UNESCO World Heritage Site is located in the Kedu Valley, in the southern part of Central Java, at the centre of the island of Java, Indonesia.

Explanation

A nanometer (nm) is equal to one-billionth of a meter, written in scientific notation as 1 × 10⁻⁹ m or 0.000000001 meters.

It is commonly used to measure objects at the atomic and molecular scale.