Science [1 Marks Each] QUE - ANS

On burning, the leaves pollute the atmosphere. There will not be any compost manure if the leaves are burnt.

Landfill.

Yes.

We should use the packings, polythene bags, etc., for as many times as we can, instead of throwing them.

We should prefer using paper bags rather than polythene bags as paper can be decomposed of easily. This reduce the generation of plastic garbage.

We should produce minimum garbage by

• Reducing.
• Reusing.
• Recycling.

All those used and unusable substances which cannot be reused in the same form are called waste.

A suitable term describing/ expressing the meaning of the above given statements are as follows:
Vermicomposting.

Kitchen, plants and animals waste.

Redworms.

A suitable term describing/ expressing the meaning of the above given statements are as follows:
Landfill.

Recycling things can reduce the amount of garbage produced. Therefore, recyclable things should not be thrown away.

Blue bins are used for collecting materials that can be recycled.

No.

By recycling, non-biodegradable materials are diverted from landfills and incinerators, preventing soil and air pollution.

Plastic bags, tins, bottles, glass, aluminum foils, broken bangles could not be converted into compost by the redworms.

All type of paper can be recycled.

Earthworms are the best organisms to be used for vermicomposting as they convert the waste from plants, animals or their products into compost.

Earthworm.

We will cover our nose while passing through it but with it we will make a complaint to the officer of Municipal Corporation and tell him to make an arrangement of cleaning the waste material.

Because it did not rot.

Vermiculture is the artificial rearing or cultivation of earthworm.

If tea leaves, cotton swabs and old soft toys are thrown into the drain, it can choke the drains and block the water supply of the area.

No, Because burning of leaves produce harmful gases and pollute our environment.

If insecticides, motor oil, paints are poured down the drain, this may kill useful microbes which help to purify water.

Every member of the society or family is responsible to dispose of the garbage properly.

Redworms are a type of earthworms which help in preparing compost from the kitchen wastes and parts of plants or animals.

The following animals are mostly found visiting heaps of waste materials:Dogs, cows, oxen, pigs, crows, and insects like houseflies, mosquitoes.

Plastics thrown casually get into drains and sewages, often blocking the way and causing water-logging. So polythene bags should not be used for garbage disposal.

The things written above come into the waste material through the various activities performed at home and from the waste material produced during cooking.

There are two types of dustbins (introduced by Indian Government):

1. The green colour dustbin is used for biodegradable wastes.
2. The blue colour dustbin is used for non-biodegradable wastes.

Papier-mâchè is a paste made of clay and paper in which some rice husk is also mixed.

Source reduction means techniques which reduce the waste generated. For example, reduction in waste by composting.

Vegetables and fruits waste, coffee and tea remains nad weed from the fields and garden.

This waste material is thrown in selected empty place or waste material bins.

The method of preparing compost with the help of redworms is called vermicomposting.

If cooking medium is made to flow down a drain, It may clog pores in soil and can block pipes also.

Plastic, Polythene, Lead batteries, Glass, Rubber, etc., are difficult to dispose of.

Fruits and vegetable peels, egg shells, waste food tea leaves.

Blue and green.

For materials that can be used again such as plastics, metals and glasses.

Management of waste is best through the 3R’s strategy-reduce, reuse, recycle.

The rotting and conversion of some materials into manure is called composting.

Safai karamcharis.

Children collect plastic bags, broken toys of plastics, piece of paper, cardboard, newspapers, old books, broken things of iron, etc., from the waste material to sell to get money.

Method of making compost using redworms is called vermicomposting.

Landfill Garbage is buried under soil in an area.

Compost Substance is converted into manure for use in agricultural fields.

A landfill is a low-lying open area in which biodegradable waste is deposited.

The waste material is taken to places which have to be filled and this work is done by Municipal Corporation of different cities.