Question

Why are some substances biodegradable and some non-biodegradable?

Answer 1

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Biodegradable :-

The substance which can be disposed off naturally by the action of microorganisms like bacteria, fungi etc are called biodegradable substances. These organisms secrete enzyme which causes breakdown of biodegradable substances into simple forms.

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Non - Biodegradable :-

The substance that cannot be converted into harmless simpler forms by the action of microorganisms are called non - biodegradable substances. Example - plastics, radioactive wastes, insecticides etc.

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Answer 2

ᴄᴇʀᴛᴀɪɴ sᴜʙsᴛᴀɴᴄᴇs ᴀʀᴇ ᴇᴀsɪʟʏ ᴀᴄᴛᴇᴅ ᴜᴘᴏɴ

ʙʏ ᴛʜᴇ ᴇɴᴢʏᴍᴇs ᴏғ sᴀᴘʀᴏᴘʜʏᴛᴇs ᴀɴᴅ ɢᴇᴛ

ᴄᴏɴᴠᴇʀᴛᴇᴅ ɪɴᴛᴏ sɪᴍᴘʟᴇʀ sᴜʙsᴛᴀɴᴄᴇs, ʜᴇɴᴄᴇ ᴀʀᴇ

ʙɪᴏᴅᴇɢʀᴀᴅᴀʙʟᴇ.

ᴡʜᴇʀᴇᴀs ᴄᴇʀᴛᴀɪɴ sᴜʙsᴛᴀɴᴄᴇs ʟɪᴋᴇ ᴘʟᴀsᴛɪᴄ,ᴇᴛᴄ.,

ᴄᴀɴɴᴏᴛ ʙᴇ ᴅᴇɢʀᴀᴅᴇᴅ ʙʏ ᴛʜᴇ ᴀᴄᴛɪᴏɴ ᴏғ ᴇɴᴢʏᴍᴇs

ᴀɴᴅ ᴛʜᴜs, ᴀʀᴇ ᴄᴀʟʟᴇᴅ ɴᴏɴ-ʙɪᴏᴅᴇɢʀᴀᴅᴀʙʟᴇ.