Advertisements
Advertisements
प्रश्न
Which of the following features relates to biodegradable substances?
विकल्प
Broken down by biological processes
Remain inert
Persist in the environment for a long time
May harm the ecosystem
उत्तर
Broken down by biological processes
Explanation:
Biodegradable materials are those that can be broken down or destroyed by bacteria or other decomposers.
APPEARS IN
संबंधित प्रश्न
Multiple Choice Type:
The most convenient reusable wastes are
Define electronic waste and list at least six items which come under this category.
Give a reason for the following :
Landfills are coming up fast near large cities.
What are Composting ? Explain its Process
Put a tick (√) against the garbage items given in Table 16.1 which could be converted into manure. Put a cross (×) against the others.
Garbage Items | Make manure or not | |
(i) | Eggshells | |
(ii) | Straw | |
(iii) | Dry flowers | |
(iv) | Pebbles | |
(v) | Broken pieces of glass | |
(vi) | Nails and screws | |
(vii) | Plastic bangles | |
(viii) | Leftover food | |
(ix) | Steel broken vessel | |
(x) | Dead animals |
Write 3 sentences on what comes to your mind when you chance to see the following.
A rag picker
What happens when
Tea leaves, cotton swabs and old soft toys are thrown into the drain.
Answer the following question in one or two words or sentences:
Who, out of the following should properly dispose of the garbage – father, mother, elder brother, younger sister?
Choose the odd one out from the following terms and name the category to which the others belong: