3 most spoken language groups for the 6 main language families.

Explanation:

Niger-Congo, Austronesian, Trans-New Guinea, Sino-Tibetan, Indo-European, and Afro-Asiatic.

daylight saving time (dst) has been used for more than 100 years. changing the clocks does not create extra daylight, but it causes the sun to rise and set at a one of the aims of dst is to make sure that people's active hours coincide with a german analysis of 44 studies on energy use and dst found a positive