Jack Edmondson p3

4. in a way that lasts or remains unchanged indefinitely; for all time.
6. the air available to aircraft to fly in, especially the part subject to the jurisdiction of a particular country.
8. relating to the nucleus of an atom.
10. machinery and equipment developed from the application of scientific knowledge.
11. a political theory derived from Karl Marx, advocating class war and leading to a society in which all property is publicly owned and each person works and is paid according to their abilities and needs.
12. of or from outside the earth or its atmosphere.
14. a leveled strip of smooth ground along which aircraft take off and land.
15. the height of an object or point in relation to sea level or ground level.
16. relating to or resembling photographs.
18. accept or admit the existence or truth of.
20. an event or occurrence.
21. the fact or condition of functioning or being active.

1. designed to resist the penetration of bullets.
2. a celestial body orbiting the earth or another planet.
3. a vehicle used for space travel.
5. the forming of a theory or conjecture without firm evidence.
7. the work done by, or the occupation of, an engineer
9. the ability to acquire and apply knowledge and skills.
13. the action of transporting someone or something or the process of being transported.
17. a deputy or substitute acting for a superior.
19. the process of developing or being developed.