Chapter 16: Garbage in, Garbage out

Ans: The garbage items that could be converted into manure are marked with a Yes.

Ans: Family X is more environmentally aware and conscious of the effects of improper garbage disposal. As a result, it separates non-biodegradable garbage such as polythene bags from biodegradable waste such as kitchen waste.           

Ans: The correct steps of vermicomposting are as follows:

1 – F Dig a pit in a suitable place in your garden. 

2 – C Spread sand on the floor of the pit. 

3 – E Add vegetable peels and fruit waste to the pit. 

4 – A Sprinkle water to keep it moist

5 – D Place red worms in the pit.

6 – B Cover with a gunny bag or grass.        

Ans: i. On seeing a rag picker, I feel that he is poor and does not get enough food; it was doing such work.

ii. He does his job very obediently. He separates biodegradable and non-biodegradable waste into two different sacs.

iii. He is exposing himself to various diseases by working in such areas.

Ans: i. Cow is exposed to unsafe things.

ii. It's possible that it'll choke on the plastic bag.

iii. The polythene bag might also get stuck in its gut leading to the cow's death.

Ans: i. Waste is being produced in a large amount. 

ii. We expect others to clear waste when we are also involved in it. 

iii. Mosquitoes, flies are born because of this garbage, which causes various diseases. The air is also contaminated, resulting in illnesses.

Ans: Paper pulp can be used to make hard boxes and other items in the following ways:

(a) To begin, we can create a stencil by unfolding a small cardboard box and tracing it onto a piece of cardboard the same size as a mould. Cut the shape now.

(b) Place the stencil between mould and the deckle.

(c) To remove the pulp, raise the mould, stencil, and deckle in one continuous action.

(d) Take the box off the stencil and set it aside to dry.

(e) Now, fold the box and tape it to assemble it.

(f) The box is ready.

Ans:  Plastic ban is justified as-

i. Non-biodegradable waste is plastic.

ii. People throw plastic into rivers and seas, causing marine and aquatic creatures to die.

iii. The improper disposal of plastic has choked drainage systems.

Ans: When plastic is burnt, a variety of hazardous gases are released. These gases pollute the environment and cause major health problems in humans. The gases that are released pollute the air, and the ashes that are left pollute the soil.

Ans: If we put a cooking medium down the drain, it will clog the soil pores and drain pipes.

Ans: If we pour insecticides, motor oil, or paint down the drain, we will kill the microbes that clean the wastewater.

Ans: If we pour tea leaves, cotton swabs, and old soft toys down the drains, they will clog the pipelines, stopping water flowing through drains and into public water sources.

Ans: Paper bags should be preferred over polythene bags since the paper is biodegradable and reusable. In contrast, polythene bags are non-biodegradable and damaging to animals, humans, plants, and the environment.

Ans: Garbage should be properly disposed of by all family members. Every human on the planet has a duty to do so.

Ans: Earthworms are the animals used in vermicomposting. They compost waste from plants and animals, as well as their goods.

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Also, if you are in search of the revision notes for the Class 6 Science you can find them here: CBSE Class 6 Science Revision Notes - Free Download (vedantu.com)