Across
- 4. Replacing the natural biome with plants and animals from elsewhere
- 6. Adding water to land to supplement natural rainfall
- 7. These least productive biomes
- 8. Species moving in response to climate changes
- 13. Networks of feeding relationships
- 14. The location and arrangement of biomes across the surface of the Earth
- 15. Structures or plantings to reduce wind and protect crops
- 16. Adding nutrients to soil to increase crop yields
Down
- 1. Refers to places with mild to warm summers and cool to cold winters
- 2. Refers to the amount of biomass or living plant material produced
- 3. This biome occurs near the Arctic Circle and at high mountain ranges where it's too cold for trees
- 5. The process used by plants to produce biomass using sunlight
- 9. Earth’s major vegetation communities
- 10. Areas of the Earth that have similar temperatures
- 11. Refers to places that are between the tropics and have warm winters and hot summers
- 12. Refers to places with cool summers and very cold winters
