Most pages on the World Wide Web are written in computer languages (such as HTML) that allow Web authors to structure text, add multimedia content, and specify what appearance, or style, the result should have.
As for every language, these have their own grammar, vocabulary and syntax, and every document written with these computer languages are supposed to follow these rules. The (X)HTML languages, for all versions up to XHTML 1.1, are using machine-readable grammars called DTDs, a mechanism inherited from SGML.
However, Just as texts in a natural language can include spelling or grammar errors, documents using Markup languages may (for various reasons) not be following these rules. The process of verifying whether a document actually follows the rules for the language(s) it uses is called validation, and the tool used for that is a validator. A document that passes this process with success is called valid.
from Wikipedia Biotechnology is the broad area of biology involving living systems and organisms to develop or make products, or "any technological
application that uses biological systems, living organisms, or derivatives thereof, to make or modify products or processes for specific use"
(UN Convention on Biological Diversity, Art. 2).[1] Depending on the tools and applications, it often overlaps with the (related) fields of
molecular biology, bio-engineering, biomedical engineering, biomanufacturing, molecular engineering, etc.
For thousands of years, humankind has used biotechnology in agriculture, food production,environment and medicine.[2] The term is
largely believed to have been coined in 1919 by Hungarian engineer Károly Ereky. In the late 20th and early 21st centuries, biotechnology has
expanded to include new and diverse sciences such as genomics, recombinant gene techniques, applied immunology, and development of
pharmaceutical therapies and diagnostic tests.[2]
Today IS the very first day of the rest of your life.
