Groundnut is nuts. It is another word for peanuts
Oxygen belongs to the Chalcogens family of elements. Oxygen is found in Group 16 or VIA of the periodic table, along with the elements sulphur, selenium, polonium and tellurium.
Segments of genetic information, segments of nucleotides present in a particular strand of DNA, have the coding instructions to eventually synthesize proteins or polypeptides in the cell.
A one-use item is disposable, because it is disposed after its use.