The theoretical lowest possible temperature. It is the theoretical temperature at which entropy reaches its minimum value.

The rate at which the velocity of a body changes with time

value

Commonly used to mean the deposition of acidic components in rain, snow, fog, dew, or dry particles. The more accurate term is acid precipitation. Clean or unpolluted rain has a slightly acidic pH of 5.6, the extra acidity in rain comes from the reaction of air pollutants, primarily Sulphur dioxide and Nitrogen oxides, with water in the air to form strong acids (like sulphuric and nitric acid). The main sources of these pollutants are vehicles and industrial and power-generating plants.

The release of chemicals and particulates into the atmosphere. Common gaseous pollutants include carbon monoxide, sulfur dioxide, chlorofluorocarbons (CFCs) and nitrogen oxides produced by industry and motor vehicles. Photochemical ozone and smog are created as nitrogen oxides and hydrocarbons react to sunlight. Particulate matter, or fine dust is characterized by their micrometre size PM10 to PM2.5.  

Source: https://en.wikipedia.org/wiki/Pollution#Forms_of_pollution

A measurement of the pollutants in the air

Unicellular or multicellular organisms formerly classified as plants, occurring in fresh or salt water or moist ground, that have chlorophyll and other pigments but lack true stems, roots, and leaves

The rate of change of angular displacement with respect to time.

These are values in a set of results which are judged not to be part of the variation caused by random uncertainty

A medicine  that inhibits the growth of or destroys microorganisms.

Specialized cells of the immune system which can recognize organisms that invade the body (such as bacteria, viruses, and fungi). 

A blood protein produced in response to and counteracting a specific antigen. Antibodies combine chemically with substances which the body recognizes as alien, such as bacteria, viruses, and foreign substances in the blood

An awarding body in England, Wales and Northern Ireland. It compiles specifications and holds examinations in various subjects at GCSE, AS and A Level and offers vocational qualifications

The ASE (Association for Science Education) is a community of teachers, technicians, and other professionals supporting science education and is the largest subject association in the UK

Single-celled microorganisms that can exist either as independent (free-living) organisms or as parasites (dependent on another organism for life). The plural of bacterium.

Materials that will decompose into naturally occurring, harmless components with exposure to air, sunlight and/or moisture.

The variety of life in all its forms, levels and combinations. This phrase acts as generic terminology for Eco-system diversity, species diversity, and genetic diversity.

A fuel produced from dry organic matter or combustible oils produced by plants. Examples of biofuel include alcohol, bio diesel from vegetable oil and wood.

The total mass of all living organisms within a biological community. Biomass usually refers to plant matter grown for use as Biofuel, but also includes plant or animal matter used for production of fibres, chemicals or heat. Biomass may also include Biodegradable wastes that can be burnt as fuel.

The part of the earth and its atmosphere in which living organisms exist or that is capable of supporting life

A region of space-time where gravity prevents anything, including light, from escaping

Water from toilets, kitchen sink, or other dirty sources, which could be contaminated with microorganisms or harmful bacteria.

A unit of energy (heat)

The cycle by which carbon is exchanged between the Biosphere, geosphere, hydrosphere and atmosphere of the Earth.
Major activities include photosynthesis, respiration and decay between atmospheric and terrestrial systems.

The greenhouse gas whose concentration is being most affected directly by human activities. The major source of emissions is fossil fuel combustion.

A measure of the effect that human activities have on the climate in terms of the total amount of Greenhouse gases produced

A tax on energy sources which emit Carbon dioxide into the atmosphere. It is an example of a pollution tax.

Categoric variables have values that are labels. Eg names of insects or types of material.

A change in one variable that results from or is caused by a change in another variable