Punctuation â apostrophes versus quotation marks. Punctuation marks. Punctuation has a very important function for the written language as it helps to build up a clear structure for a better clarification and comprehension of the text.
Oceanography is the study of the ocean and all its complex relationships with the planet. This includes the study of weather, ocean currents, and sea life, and every other topic associated with the ocean. An oceanographer is a special kind of scientist who studies the ocean. The oceans are a large environment, and so the science of oceanography must be just as large.
Because of the human bodyâs complexity, sonographers often specialize. For example, abdominal sonographers focus on the abdomen and nearby organs such as the liver, pancreas and spleen. Breast sonographers concentrate on breast tissues, primarily to detect the presence and progress of breast cancer.