Vocabulary

2. relating to the present or recent times as opposed to the remote past.
5. open out (something) so as to extend its surface area, width, or length.
7. a member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus, including some that can cause disease.
9. an infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.
11. the application of scientific knowledge for practical purposes, especially in industry.
12. the stage of human social and cultural development and organization that is considered most advanced.
14. a change which is a result or consequence of an action or other cause.
15. insensitivity to pain, especially as artificially induced by the administration of gases or the injection of drugs before surgical operations.

1. a microorganism, especially one which causes disease.
3. onsider or think of (someone or something) in a specified way.
4. a particular form of procedure for accomplishing or approaching something, especially a systematic or established one.
6. a disorder of structure or function in a human, animal, or plant, especially one that has a known cause and a distinctive group of symptoms, signs, or anatomical changes.
8. movement to and fro or around something, especially that of fluid in a closed system.
10. the ability to do something well
13. the subject of a talk, a piece of writing, a person's thoughts, or an exhibition; a topic.