ECOSYSTEM (Part-II)

Recover.
The widely recognized "Three Rs" for waste management and environmental conservation are:

Reduce: Minimize the amount of waste generated.

Reuse: Use items multiple times before discarding them.

Recycle: Process used materials into new products.

Plastic.
Non-biodegradable waste cannot be broken down by natural processes. Flowers, dead animals, and vegetables are organic materials that are biodegradable. Plastic is a synthetic material that resists natural decomposition.

• Bag house filters and Venturi scrubbers are typically used for air pollution control.
• Windrow composting is a method for composting organic waste.

301-500.
The Air Quality Index (AQI) typically has categories as follows:

0-50: Good
51-100: Satisfactory
101-200: Moderately Polluted
201-300: Poor
301-400: Very Poor
401-500: Severe (often considered hazardous at this level)

Therefore, 301-500 represents the hazardous range.

Rhizobium. Rhizobium is a genus of Gram-negative soil bacteria that fix nitrogen. They form an endosymbiotic nitrogen-fixing association with roots of legumes and other nitrogen-fixing plants. Pseudomonas and Azotobacter are also involved in nitrogen cycling, but Rhizobium is specifically known for its symbiotic relationship with legumes for nitrogen fixation.

Lactobacillus is associated with lactic acid fermentation (e.g., in dairy products).