Match the contents of column I, II, and III.

Column I	Column II	Column III
((a) Mercuty (b) Paedogenesis (c) Abiotic (d) Carbon dioxide (e) Food	(i) Air & water (ii) Water pollution (iii) Resource (iv) Photosynthesis (v) Sun, water & wind	I. Living organism II. Shell (animals) III. Energy IV. Minamata V. Soil

a) Mercury Water pollution Minamata

Mercury was dumped into the minamata bay along with other waste products. Mercury constantly polluted the water of minamata bay. People who consumed this mercury contaminated water, suffered from disease, known as Minamata disease.

b) Paedogenesis Sun, water and wind Living organism

Sun water and wind are the physical forces that break bigger rocks into fine smaller mineral particles and lead to weathering of soil. Living microorganisms like bacteria and fungi break down organic materials and lead to humification and mineralization in the soil. This decomposition process is paedogenesis.

c) Abiotic Air and water Soil

Abiotic factors are non living components of the environment that have a strong influence on living components of the environment. Air, water and soil, these all are abiotic components of environment.

d) Carbon dioxide Photosynthesis Shell (animals)

Photosynthesis is a process wherein plants prepare their own food by using carbon dioxide, water, sunlight and chlorophyll. They release oxygen and food as by-products. Carbon from carbon dioxide dissolves in seawater and combines with calcium to form shells of calcium carbonate CaCO_3.

e) Food Resource Energy

Food is obtained from plants that synthesize it by the process of photosynthesis. All living organisms need food to sustain life because it provides energy. So, Food is a resource that provides energy to living organisms.