Unwanted or unusable remains or by-products of materials or food is known as waste.
Long answer type question
Do you think it is better to use compost instead of chemical fertilizers? Why? Check your Answers
We think that compost is better to use instead of chemical fertilizers. Compost fertilizers are those in which plants and animal extracts etc. are used. These fertilizers usually contain all nutrients in varying proportions. These fertilizers are not made in factories. They are prepared by the farmers themselves using indigenous methods.
They contain a large measure of organic matter. No special precautions are required while using them. In this category includes gobar khad, compost or the mixture made out of organic waste and human excreta, green manure and oil cakes etc.
Chemical fertilizers are manufactured artificially in factories with the use of chemicals. These contain large amounts of plant nutrients. These contain only one and two or three nutritional elements. For examples, Urea, Ammonium Sulphate, Super Phosphate, Potassium Sulphate, Sodium Nitrate, Calcium Sulphate etc.
a. What is vermicomposting?
b. How is vermicompost useful as compared to chemical fertilizer?
c. Why should we not use wastes that may contain salt, pickles, oil, vinegar and milk preparations as food for redworms in vermicomposting pit? Check your Answers
a. The process of making compost with the help of redworms is called vermicomposting.
b. Vermicompost is less expensive, high yielding crops and beneficial for soil health as compared to chemical fertilizers
c. We should not use wastes that may contain salt, pickles, oil, vinegar and milk products as food for redworms because these substances attract disease-causing small organisms in pit which may harm redworms ultimately hindering the preparation of vermicompost.
a. Is garbage disposal the responsibility only of the government?
b. Is it possible to reduce the problems relating to disposal of garbage? Check your Answers
a. No, it is also our responsibility. Because fresh air, water and locality helps us to make healthy. So, every citizen should care for waste disposal. We should not throw the wastes carelessly. We collect all the garbage carefully in dustbins and should save environment to pollute.
b. Yes, it is possible to reduce the problems relating to disposal of garbage by using re – cyclable materials.
We separate the garbage of our house into two groups. These are:
Group 1: Bio-Degradable
Garbage from the kitchen like fruit and vegetable peels, egg shells, waste food, tea leaves. Include newspapers, dry leaves and paper bags in this group.
Group 2: Non-Biodegradable
Piece of cloth, polythene bags, broken glass, Aluminium wrappers, nails, old shoes and broken toys.
a. What do you do with the left-over food at home?
b. If you and your friends are given the choice of eating in a plastic plate or a banana leaf platter at a party, which one would you prefer and why? Check your Answers
a. We preserve properly the left-over food and reuse. We may also convert it to some other food preparation and consume.
b. In a party I and my friends choose to eat in a banana leaf platter, due to the following reasons.
A landfill site, also known as a tip, dump, rubbish dump, garbage dump, or dumping ground, is a site for the disposal of waste materials. Landfill is the oldest and most common form of waste disposal, although the systematic burial of the waste with daily, intermediate and final covers only began in the 1940s.
How many types of bins are provided by the government for collecting garbage? Check your Answers
The government provides two types of bins for collecting garbage. They are:
Blue bins: It is to collect non-biodegradable wastes like plastic, metal and glass wastes.
Green bins: It is to collect biodegradable wastes like vegetable and fruit peels, tea leaves, etc.
Earthworms are called farmer’s friends because they help to increase the fertility of soil. They eat dust and make soil fertile. They are used to prepare vermicompost, which gives many nutrients to soil and ultimately to crop plants.
Plastics are not suitable for storing cooked food because they emit harmful
chemicals when they are exposed to high temperatures. Using plastics causes health problems such as heart disease, diabetes and reproductive dysfunction.
What are the various methods of garbage disposal? Describe the landfill method. Check your Answers
There are different methods of disposal of garbage depending on the nature of garbage. Some of the effective measures are: