Ecology

2. The length of time for which a person or animal lives or a thing functions
3. A system of interlocking ad interdependent food chains
6. the side that's on the east
7. A person who owns or manages a farm
8. An uncontrolled fire in a wooded area
10. Each of several hierarchical levels in an ecosystem, comprising organisms, that share the same function in the food chain and the same nutritional relationship to the primary sources of energy
15. A group of individuals of the same species within a community
16. A large dark African antelope with a long head, a beared and mane and a sloping back
17. A continent south of Europe and between Atlantic and Indian oceans
18. An imaginary line drawn around the earth equally distant from both poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0
19. Endless plain

1. A heavy wild ox with backswept horn
4. A disorder of structure or function in a human, animal or plant
5. Eat primary producers
9. A line separating two poloitical or geographical areas, especially countries
11. The activity or condition of competing
12. The surroundings or conditions in which a person, animals, plant lives or operates
13. The activity of hunting wild animals
14. The ability to act or move
15. Rain,snow,sleet onto the grounds