Which of the following groups contain only biodegradable items?( )
A. Grass,flowers and leather
B. Grass,wood and plastic
C. Fruit-peels,cake and lime-juice
D. Cake,wood and grass
Answer
ACD
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Solution
Biodegradable products include organic substances which can be broken down into simpler organic forms by the action of micro-organisms, soil, carbon dioxide or methane without harming the environment. From the given options,option \((A)\), \((C)\) and \((D)\) are the groups of biodegradable items and option \((B)\) contain non biodegradable items like plastic.
Will the impact of removing all the organisms in a trophic level be different for different trophic levels? can the organisms of any trophic level be removed without causing any damage to the ecosystem?
How do advantages of exploiting natural resources with short term aims differ from the advantages of managing our resources with a long term perspective?