in biology, the unit of structure and function of which all plants and animals are composed. The cell is the smallest unit in the living organism that is capable of integrating the essential life processes.he size of the nucleolus is a function chiefly of the cellâs ribosome requirement; the nucleolus is, therefore, especially large in a cell that intensively synthesizes proteins. Protein synthesis, the end result of chromosome function, occurs mainly in the cytoplasm.
In physical oceanography, the significant wave height (SWH or H s) is defined traditionally as the mean wave height (trough to crest) of the highest third of the waves (H 1/3).
Wave Action at the Waterâs Surface. A wave in the ocean has the same basic shape as many other waves. â¢ The crest is the high point of the wave. â¢ The trough (trawf) is the low point of the wave. â¢ Wave heightis the vertical distance between the top of the crest. and the bottom of the trough.