Across
- 2. Plants in a forest grow poorly after taller trees block most of the available light. Which environmental resource became limited?
- 5. A rabbit population decreases, causing foxes to have less food. What model helps explain this relationship?
- 7. Scientists count every white-tailed deer living within one state park. What group are they measuring?
- 9. A long drought causes plants to die because there is very little rainfall. Which type of environmental factor caused the change?
- 11. A cactus survives in a desert because it stores water in its thick stem. What survival characteristic does the cactus have?
- 12. Crops grow better after compost adds important substances to the soil. What did the compost provide?
- 13. Scientists study how plants, animals, water, soil, and climate interact in one area. What are they studying?
Down
- 1. A disease spreads through a forest and affects only the trees, not the rocks or streams. Which type of environmental factor changed?
- 2. A farmer adds organic matter to improve how well crops grow in a field. Which characteristic of the soil is being improved?
- 3. A beaver builds a dam that creates a pond where it finds food, water, and shelter. What is this place called?
- 4. After leaves fall to the forest floor, fungi break them down and return nutrients to the soil. What type of organism is doing this job?
- 6. A hawk survives by eating snakes and mice instead of making its own food. What type of organism is the hawk?
- 8. A plant grows well because it uses energy from the Sun to make its own food. What type of organism is it?
- 10. Two regions receive different amounts of rainfall and have different plants and animals because of their climates. What large ecological region is being compared?