Within the nucleus of non-dividing cells are strands or string-like structures known as chromosomes. As the cell...
Day: January 18, 2023
Almost every known chemical element can be found in varying proportions in the oceans whose most characteristic...
The ocean basins are in many ways similar to the land surface. There are submarine ridges, plateaux,...
The oceans occupy more than 70 per cent or 364 million sq km (140 million square miles)...
