How do you tell the age of a shark? Itâs not easy. Because they shed their teeth so often, you canât measure the growth rings in them to determine age. The vertebrae have growth rings too, but they arenât added at a uniform rate, so researchers inject marker chemicals to captured sharks to provide reference samples.
An acronym is an abbreviation, used as a word, which is formed from the initial components in a phrase or a word. Usually these components are individual letters (as in NATO or laser) or parts of words or names (as in Benelux).ords derived from an acronym by affixing are typically expressed in mixed case, so the root acronym is clear. For example, pre-WWII politics, post-NATO world, DNAase. In some cases a derived acronym may also be expressed in mixed case. For example, messenger RNA and transfer RNA become mRNA and tRNA.
What does the abbreviation IT mean? The abbreviation IT usually stands for Information Technology. This abbreviation is in relation to computers and telecommunication equipment, and usually describes a job p â¦ osition.