Yes, it is better to use compost instead of chemical fertilisers. The reasons are as follows:
(i) Compost is ecofriendly, while chemical fertilisers destroy the natural composition of soil by adding unwanted chemicals into the soil.
(ii) Production of compost is easy and harmless whereas production of chemical fertilisers is a costly process.
(iii) Chemical fertilisers cannot be decomposed by natural methods hence, create pollution of soil and water.

It means reduce the waste generation, reuse the substances which can be used again and recycle the materials which are non-biodegradable and cannot be reused.

Composting It is a natural process by which biodegradable waste like leaves can be turned into manures by the use of microbes only.
Vermicomposting In this process, manure is formed from the waste by use of redworms along with the microbes.

Containers used: Hor storing poisonous substances contain residues of chemicals in them.
These containers will contaminate other recycling substances thereby, making every product recycled in them harmful.

The two ways to minimise the harmful effects of plastics are
(i) Reuse of plastic bags and containers will minimise the number Of plastic bags.
(ii) Avoid burning of plastics as they release harmful gases in the atmosphere.
Correct the definitions of certain terms given below by changing only one word.
(a) Compost Substances converted into manure for use in industries. 
(b) Landfill Garbage buried under water in an area.
(c) Recycling Reuse of unused material in the same or another form.

We get biogas which is made from animal waste. We have to set up such plants to generate biogas. It is ecofriendly and best way to manage animal waste.

The useful garbage could be the peels of fruits and vegetables, leftover cooked food and fallen leaves of trees. It is thrown away in the first place because its primary use was complete. Some garbage is not actually garbage because it can be converted into compost which is used as fertiliser.

No, the containers used for storing harmful substances should not be used to make plastic bags because plastic bags are used to carry grocery items which may be contaminated.

They eat food items like fruit and vegetable wastes, tea and coffee remains and weeds from the garbage.

Plastic bags, cans, aluminium foils, and many other package materials are used and thrown after use as garbage. Things like ghee, oils, soaps, cereals, snacks, even vegetables are available in smaller packets in which a lot of packaging material is used.

The above mentioned wastes can be categorised into two categories:
(i) Green bins Wastes which can be decomposed is put in green dustbins, e.g. plants and animals waste, peels of vegetables and fruits, dried leaves, twigs, remains of meat like flesh and bones.
 (ii) Blue bins Wastes which cannot be decomposed but can be recycled is put in blue dustbins, e.g. plastic materials, glass, metals, etc.

Plastic bags are not considered suitable for storing cooked food because
(i) these bags may have been used earlier for some other purposes. The residue left behind can be harmful.
(ii) food can mix with chemicals present in plastic bags.
(iii) sometimes bags collected by rag pickers are washed and used which is not a healthy practice.
(iv) plastic bags are not recommended for recycle and reuse as it can harm our health.