Question

(31) Name the major gas present in air

(32) What type of worms are used in vermi-composting?

(33) Name types of transport system.​

Answer 1

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As organic matter acts as both the substrate and food in vermicomposting, and soil is not involved, only epigeic earthworms can be used in the process. Among the epigeic earthworms, Eisenia andrei and Eisenia fetida are the species most widely used in vermicomposting and vermiculture facilities worldwide.

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Answer 2

Answer:

1. The major gas present in the air is Nitrogen
2. Earth worms are used in vermi composting
3. There are 3 types of transport system

• Air
• Water
• Land

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