Rside_BiologyCh.3.2_Celina
Across
- 1. The destruction of habitats, which usually results from human activities. When habitats are destroyed, they can no longer support the original species that lived there
- 4. The practice in which forests are logged or cleared for human use and never replanted
- 6. Resource use (which is known as the ways we obtain and use materials such as wood, after, gas, oil and minerals)
- 8. The use or extraction of a resource until it is depleted. This can result in extinction.
- 9. The introduction of chemicals, toxins, wastes, or micro-organisms into the environment in concentrations that are harmful to living things
- 10. The process or industry of obtaining coal or other minerals from a mine
- 11. Occurs when water and wind erosion removes topsoil from bare land. Topsoil is the upper layer of soil, which is made mostly of humus (decomposed organic matter), minerals, water, and air. It causes erosion because few plants are left to hold the soil in place.
- 12. The dying out of a species.
- 13. To plant new trees and plants after deforestation to restore the original ecosystems as best as possible
- 14. The ways we use the land around us for urban development, agriculture, industry, mining, and forestry
Down
- 1. The division of habitats into smaller, isolated fragments. These isolated pockets of ecosystems affect plant pollination, seed dispersal, wildlife movement, and plant and animal reproduction.
- 2. Ecological information, passed down from generation to generation, that reflects human experience with nature gained over centuries
- 3. The ability of an ecosystem to sustain ecological processes. These processes are important to biological diversity and ensure the continuation of the ecosystem over time.
- 5. The development of cities, building and roads as they enlarge and expand into natural ecosystems.
- 7. Occurs when soil particles are squeezed together and the air spaces between the particles are reduced.