Question

1. Which of the following groups contains only biodegradable items? (a) Grass, flower and leather (b) Cake, wood and grass (c) Fruit-peels, cake and lime-juice (d) Both (b) and (c)​

Answer 1

Answer:

correct answer is option (d) both b and c...

Answer 2

• Option (d) Both (b) and (c) are the groups contains only biodegradable items.

Biodegradable wastes:

       Biodegradable waste includes any organic matter in waste which can be broken down into carbon dioxide, water, methane, simple organic molecules by microorganisms and other living things by compositing, aerobic digestion, anaerobic digestion or similar process.

       Biodegradable waste when not handled properly can have an outsized impact on climate change , especially through methane emissions from anaerobic fermentation that produces landfill gas.

    Such materials include gypsum and its products such as platerboard and other simple organic sulfates which can decompose to yield hydrogen sulphide in anaerobic land-fill conditions.

      Few examples: food waste, human waste, paper waste, manure, sewage etc....