Questions

Light travels fastest in Vacuum. The fastest thing in the whole universe is the speed of light in a vacuum like outer space. It is about 2.99 x 10⁸ m/s. 

A source program is is a text file that contains instructions or a program written in a language other than machine code, typically a high-level language.

A computer has two types of memory.

1. Non-volatile and

2. Volatile.

Volatile memory is computer memory that requires power to maintain the stored information.

* It is a temporary memeory which cannot contain information permanently.

Example :: RAM or Random Access Memory

Non-volatile memory is computer memory that can retain the stored information even when not powered.

* It is a permanent memory in which data is stored in permanently.

Examples :: Hard disc, ROM, Floppy discs, Magnetic tape,...

Salinity is often high in enclosed seas, this is due to high temperature, rapid evaparation and little inflow of fresh water.

While dew , fog and mist are formed due to condensation of vapour into water drops, hail falls from the clouds in the form of hard pellets of ice.