৮৫৯১
Nylon, a synthetic →adonefrom →b a combination of water, air and a by -product→c of coal was frist →dintroduced in 1938.
উত্তর
a
৮৫৯২
→astars in our universe very →cin temperature, color →cbright, size and→d mass.
উত্তর
c
৮৫৯৮
Rice,→A which it still forms the staple diet of →Ba major part of the word's population, grows →Cbest in→D hot and wet lands
উত্তর
A