Across
- 3. is all the water held on the Earth.
- 7. levels include; organisms, population, biologicalcommunity, ecosystem, biome and biosphere,
- 8. the term ecosystem was coined by in 1935.
- 10. This is a large regional unit characterized by a major vegetation type and associated fauna found in a specific climate zone.
- 11. consists of all the living organisms on Earth.
- 14. being the source of Energy for the Earth drives the various processes taking place in the Earth.
- 15. is a higher ecological category next to population.
- 16. is the layer of gases that surround the Earth.
- 17. is fully adapted to its environment.
- 18. is a group of individuals of the same species, inhabiting the same area, and functioning as a unit of biotic community.
- 19. These subsystems are interconnected by processes and cycles that continuously transforms and /or transfer matter and energy throughout the whole Earth following the laws of conservation of matter and energy.
- 20. The term ecosystem was coined by Sir Arthur Tansley in
Down
- 1. The entire inhabited part of the earth and its atmosphere including the living components is called the
- 2. is the physical Earth consisting of rocks, magma and soil.
- 4. These are three types of biotic community, they are: animals, plants and
- 5. The organisms of the similar type have the potential for interbreeding, and produce fertile offspring.
- 6. between populations is generally studied.
- 9. are parts of nature where living organisms interact amongst themselves and with their physical environment.
- 12. organization results from interdependence and interactions amongst population of different species in a habitat.
- 13. can be recognized as self- regulating and self-sustaining units of landscape, e.g., a pond or a forest.