24HRFS7

2. Character or topography of the land.
6. Organism capable of growing on bare sites until replaced by other species.
8. Northern mixed coniferous and deciduous forest belt across North America, Europe, and Asia.
10. Substances with a pH below 7.
14. Land shape or features.
15. Timber stand with less than 80% of trees in the main canopy being of a single species.
17. Relative proportions of sand, silt, and clay particles in soil.
19. One of two or more characteristic species in a community.
22. Forest near water bodies subject to periodic flooding, often with wetland hardwood species.
23. The limited range of environmental changes an organism can withstand.
24. Precipitation with decreased pH due to air pollution, affecting ecosystems and structures.
26. Offspring of a bird or mammal.

1. Organism only observable through a microscope.
3. Layer of smaller trees' crowns in a forest.
4. Arrangement of vegetation layers in a forest, from canopy to small herbaceous plants.
5. When a species specializes in a particular habitat layer or time for hunting.
7. Wetland dominated by trees.
9. Species naturally present and thriving in an ecosystem without human influence.
11. Large, nearly level land areas near ocean shores formed from marine deposits.
12. Forest area with trees of the same age due to simultaneous germination, planting, or harvesting.
13. Trees capable of growing in shade and competition with other trees.
16. Tree growing above the forest canopy or plant emerging from water in wetlands.
18. Forest with trees of different ages intermingling.
20. Typically coniferous trees, including some deciduous species like aspen.
21. Number of organisms per unit of space, or compactness of a substance.
25. Fine-grained soil that is plastic when wet and hard when dry, with particles less than 0.002 millimeters.