A resource is a source or supply from which a benefit is produced and that has some utility. Resources can broadly be classified upon their availability — they are classified into renewable and non-renewable resources. ... An item becomes a resource with time and developing technology. For resources traded in markets such as oil, land, timber, and crops, the value of small quantities of market goods can be measured by their observed price. In competitive markets, prices reflect both the marginal cost of producing the good to suppliers and the marginal value to consumers. Ethical values are the ones we make ethical choices based on them, or they are the kind of values that have to do with being good or doing the right thing. There are many ethical values. Justice, honesty, empathy, compassion, respect and responsibility are the most important ones.

Definitions of surd: A root of a positive real quantity is called a surd if its value cannot be exactly determined.
Surds are the irrational numbers which are roots of positive integers and the value of roots can’t be determined. Surds have infinite non-recurring decimals. Examples are √2, √5, ∛17 which are square roots or cube roots or nth root of any positive integer.

For example, each of the quantities √3, ∛7, ∜19, (16)^²⁵²⁵ etc. is a surd.

Biodegradable plastics can be biologically degraded by microorganisms to give lower molecular weight molecules. To degrade properly biodegradable polymers need to be treated like compost and not just left in a landfill site where degradation is very difficult due to the lack of oxygen and moisture. Normally, plastic items take up to 1000 years to decompose in landfills. But plastic bags we use in our everyday life take 10-20 years to decompose, while plastic bottles take 450 years.

1) The Constitution of India has been amended for approximately 100 times.
2) It has accepted the changes of the Indian society. Further the judiciary of India has interpreted the document relevant to the changing times.
3) A commission was appointed by NDA in 2000 to review the document and the report for the same was submitted in February 2002.

Conservation of Natural Vegetation and Wildlife. Forests provide a natural habitat for many species of animals. Deforestation, soil erosion, construction activities, forest fires, tsunami and landslides are the major factors that impact forest cover natural or man-made. The first and foremost thing that can be done to save the natural vegetation is to stop cultivating the non native plants. Avoid using pesticides, insecticides, and other chemicals on the plants. Plant as many trees as possible. For wildlife, we should protect the endangered animals.

Armature is a rectangular iron core wrapped by the copper coil through which electricity passes and due to magnetic field it experiences a force and rotates. The main role of an armature is multi purposed. The primary role is to transmit current across the field, therefore generating shaft torque within an active machine otherwise strength in a linear machine. The second role of an armature is to produce an EMF (electromotive force).

Advantages of ploughing:

1. The loose soil allows the plant roots to penetrate freely and deeper into the soil so that plants are held more firmly to the ground.
2. The loose soil allows the roots of the plants to breathe easily.
3. The loose soil helps in the growth of worms and microbes present in the soil as they help in turning and loosening of soil.
4. Ploughing also uproots and buries the weeds standing in the field and thereby suffocates them to death.
5. The loosening and turning of soil during ploughing brings the nutrient rich soil to the top so that the plants can use these nutrients.

The Indian State distances itself from the religion and it is not rules by a religious group & nor does it support any one religion.  It is important for a country to function democratically. Almost all the countries of the world will have more than one religious group living in them. The tyranny of the majority and the violation of Fundamental Rights can be very harmful for the people belonging to minority. In keeping with this idea of religious freedom for all, India also adopted a strategy of separating the power of religion and the power of the State. Secularism refers to this separation of religion from the State.

It is important for a country to function democratically. Almost all the countries of the world will have more than one religious group living in them. The tyranny of the majority and the violation of Fundamental Rights can be very harmful for the people belonging to minority. In keeping with this idea of religious freedom for all, India also adopted a strategy of separating the power of religion and the power of the State. Secularism refers to this separation of religion from the State.

Seven Ways to Conserve Water

1. Only Run Water-Using Appliances When They're Full. ...
2. Fix Drips By Replacing Worn Tap Washers. ...
3. Incorporate Water Conservation Into Your Landscaping. ...
4. Reduce the Amount of Water Used by Toilets. ...
5. Consider a WaterSense Labeled Shower Head. ...
6. Install a Rain Barrel. ...
7. Compost Food Waste Instead of Using Your Garbage Disposal.

Celluloid is highly flammable, difficult and expensive to produce and no longer widely used; its most common uses today are in table tennis balls, musical instruments, and guitar picks. Celluloid, the first synthetic plastic material, developed in the 1860s and 1870s from a homogeneous colloidal dispersion of nitrocellulose and camphor. ... Its popularity began to wane only toward the middle of the 20th century, following the introduction of plastics based on entirely synthetic polymers.

Drip irrigation, is an irrigation method that saves water and fertilizer by allowing water todrip slowly to the roots of plants, either onto the soil surface or directly onto the root zone, through a network of valves, pipes, tubing, and emitters. This system is good for a small yard or for watering individual plants. ... The advantage of drip irrigation over sprinklers is that there is little water loss due to evaporation or runoff. It's particularly good for mulched areas because it can directly soak the soil without washing away the mulch. Drip irrigation is the most efficient and appropriate irrigation system. Instead of wetting the whole field surface, water is applied only to the plant root zone.

The people who have no permanent homes and continuously move from one place to another are called nomads. Till about 10000 B.C., people were nomadic and ate fruits and vegetables found in nature and started hunting animals for food. Later, they settled near sources of water and cultivated land to produce wheat, paddy and other food crops. This is how agriculture originated. The growing of crops in the fields for obtaining food is called agriculture.

When the same kind of plants (crops) are grown in the fields on a large scale to obtain foods like cereals, pulses, vegetables, fruits, etc., it is called a crop.

Polyester is a generalised term for any fabric or textile, which is made using polyester yarns or fibres. It is a shortened name for a synthetic, man-made polymer, which, as a specific material, is most commonly referred to as a type called polyethylene terephthalate (PET). Rayon, nylon, polyester, acrylic, and spandex are examples of synthetic fibres. Polyamides and polyesters are two groups of synthetic fibres with high strength, not easily stretched and used as textile. Nylon is an example of polyamide polymers. Terylene is an example of polyester polymers.

A type of natural resource derived from the biosphere as opposed to abiotic resource from non-living things. Examples of biotic resources are forests, animals, birds, fish, and marine organisms. Mineral fuels can be regarded as biotic resources since they are derived from or products formed from decayed organic matter. Natural resources such as these, that can be made available indefinitely, are classified as renewable resources. Some renewable natural resources are biotic (living), such as forests and fisheries, while others are abiotic (nonliving) such as solar energy, wind energy, and water.