The Biosphere

4. - AN ASSEMBLY OF DIFFERENT POPULATIONS THAT LIVE TOGETHER
7. - A GROUP OF INDIVIDUALS OF THE SAME SPECIES LIVING IN THE SAME AREA
10. - ALL OF THE SOLID LAND AND CORE OF THE EARTH
12. - DENSE FORESTS OF CONFEROUS EVERGREENS ALONG THE EDGE OF THE TEMPERATE ZONE
14. - THE GASES SURROUNDING THE EARTH
17. - ALL PARTS OF EARTH IN WHICH LIFE EXISTS
21. - A LAYER OF PERMANENTLY FROZEN SUBSOIL
23. - A WETLAND FORMED WHERE A RIVER MEETS THE SEA

1. - A DARK ZONE WHERE PHOTOSYNTHESIS CANNOT OCCUR
2. - A GROUP OF ECOSYSTEMS THAT SHARE SIMILAR CLIMATES AND ORGANISMS
3. - ALL OF EARTH'S WATER INCLUDING WATER VAPOR IN THE AIR
5. - PATTERNS AND AVERAGES OF TEMPERATURE, PRECIPITATION, CLOUDS AND WIND OVER MANY YEARS
6. - A FACTOR THAT IS A LIVING PART OF THE ENVIRONMENT AN ORGANISM CAN INTERACT WITH
8. - A ZONE OF SUNLIT REGION NEAR THE SURFACE WHERE PHOTOSYNTHESIS CAN OCCUR
9. - SHORT-TERM DAY TO DAY CHANGES IN TEMPERATURE, PRECIPITATION, CLOUDS, AND WIND
11. - FLOATIN ALGAE AND FREE-SWIMMING ANIMALS THAT ARE THE BASIS OF AQUATIC FOOD CHAINS
13. - A DENSE, LEAFY COVERING
15. - ALL ORGANISMS LIVING IN A PLACE AND THEIR PHYSICAL ENVIRONMENT
16. - A NONLIVING PART OF THE ENVIRONMENT AN ORGANISM CAN INTERACT WITH
18. - THE SCIENTIFIC STUDY OF INTERACTIONS AMONG ORGANISMS AND THEIR INTERACTIONS WITH THE ENVIRONMENT
19. - A GROUP OF SIMILAR ORGANISMS THAT REPRODUCE
20. - AN EFFECT CONTROLLED BY GASSES WHICH TRAP HEAT IN THE ATMOSPHERE
22. - A MATERIAL FORMED BY DECAYING LEAVES AND ORGANIC MATTER