Final answer:
In a habitat rich in bacteria and nitrogen, you would expect to see legumes. Legumes have a symbiotic relationship with nitrogen-fixing bacteria called rhizobia, which provide a natural source of nitrogen.
Step-by-step explanation:
In a habitat rich in bacteria and nitrogen, you would expect to see legumes. Legumes have a symbiotic relationship with nitrogen-fixing bacteria called rhizobia, which live in their root nodules and provide a natural source of nitrogen. The nitrogen-fixing bacteria benefit from using photosynthates from the legume plants, while the soil is naturally fertilized.