Nutrient cycles
Cards (28)
- Why must nutrients be recycled in nutrient cycles?
- In the phosphorus cycle, what compounds do plants create using phosphate?
- How does phosphate enter the soil in the phosphorus cycle?
- Over long periods, where does some phosphate from the soil eventually end up?
- What is the relationship between roots and fungi called?
- How does mycorrhizae benefit plants?
- How do animals obtain phosphate?
- Which organisms break down animal and plant wastes, releasing phosphate back into the soil?
- What do nitrogen-fixing bacteria convert nitrogen gas into?
- What happens to ammonia after it is produced by nitrogen-fixing bacteria?
- What do nitrifying bacteria convert ammonium ions into?
- What do plants use nitrate for after absorbing it from the soil?
- How do animals gain nitrogen-containing compounds?
- What type of organisms break down dead material and waste products into ammonia?
- What is the process of converting ammonia into ammonium ions called?
- What is the role of denitrifying bacteria in the nitrogen cycle?
- What environmental issue can fertilizers cause?
- Why are fertilizers used in agriculture?
- What is the process by which excess fertilizers leave fields and enter nearby bodies of water?
- What is the direct effect of excess fertilizers leaching into bodies of water?
- What is the rapid growth of algae due to excess nutrients called?
- Why do aquatic plants die during eutrophication?
- Why do saprobionts increase in number during eutrophication?
- How do saprobionts cause a decrease in dissolved oxygen in water?
- What is the ultimate consequence of decreased oxygen levels in eutrophic waters?
- Name a type of nitrogen-fixing bacteria?
- What happens to phosphate in bodies of water?
- What are the two types of fertilizers?