Vocabulary

3. Millions of coputer networks that communicate together.
6. To use things like enery, fuel,materials, food, water,etc.
7. The leader of a team.
10. The order in which organisms in an ecosystem eat one another.
13. A game or event in which people compete to win.
15. A peson who trains for and competes in a sports.
16. A collection of data arranged for ease and speed of search and retrieval.
17. An aggregation of data on a storage device, identified by a name.
18. The basic rhythmic unit in a piece of music.

1. A quadrangular area on which ball games are played, such tennis or basketball.
2. To protect ones´s goal rather than attempt to acore against one´s opponents.
4. Increase the volumen.
5. Dangerous substances that need careful .
8. To give someone something as a reward for high achievement.
9. The person one competes against in a contest or a game,rival.
11. A person who trains and directs an athlete or a sports.
12. A piece of land marked out for a sports contest e.g hokey field.
13. on To shout encouragement to a team or a player.
14. Without musical accompaniment.