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1. (a)What are decomposers? What will be the consequence of their absence in an ecosystem?
(b)What are the advantages of cloth bags over plastic bags?

 Dear Student,
Decomposers or saprotrophs are those organisms that break down dead and decaying organic matter into simpler substances.
If decomposers are removed from an, ecosystem then 

  • There will be no recycling of nutrients such Nitrogen, Phosphorous, Sulphur, etc. as decomposers are responsible for most of the recycling which returns dead material to the soil in a form in which it can be reused.
  • All the biodegradable waste will accumulate and this will cause environmental pollution.
P.S. Kindly post separate questions in separate threads.
Regards

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(a)Decomposers or saprotrophs are organisms that break down dead or decaying organisms, and in doing so carry out the natural process of decomposition.if there were no decomposers in the ecosystem then there would be no organic nutrients and all dead plants and animals would ruin the animal habitat.
(b) Using cloth bags over plastic bags during shopping has a various advantages such as cloth bags are environment friendly because they are biodegradable whereas plastic bags are non-biodegradable and can harm environment. Moreover, a cloth bag lasts longer than plastic bags..............
HOPE IT WILL HELP YOU.........
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