Across
- 3. sum total of all conditions and influences that affect the development and life of all organisms on earth
- 4. process of preparation of food (carbohydrates) by green plants in the presence of sunlight using carbon dioxide from air and water from soil
- 7. Various natural or man-made particles adversely affecting the quality of air/water/soil
- 8. Planting of trees in an area to provide a forest cover
- 10. There are 9 of these in our solar system; Earth is one of them
Down
- 1. Plant community of trees concentrated in a location which is home for many animals, insects, plants
- 2. The gaseous envelop surrounding the earth
- 5. Species content of plants present in an area
- 6. Loss of species from the earth as natural or manmade process
- 9. Species content of animals present in an area