By:
Dr. A. RAVIKRISHNAN,
M.Sc., M.Phil., M.Ed., Ph.D., MISTE., MILCS.,
Asst.Prof of Chemistry.
, Environment and Biodiversity
1.1 Introduction
❑ The word environment is derived from the French word
“Environ” meaning “Surroundings”.
❑ Each and everything around us is called as environment.
❑ Every organisms is surrounded by materials and forces
which constitute its environment, from which it must derive
its needs.
❑ Environment creates favourable conditions for the
existence and development of living organisms.
,Example
Cow eats plants for its survival. The plant requires nourishment from
the soil. Nourishment is provided by nitrogenous mater excreted by
animal (or) by the dead bodies of other plants and animals.
❖ Thus for the survival of an animal (or) a plant, (or) a microbe, it
requires a supply of materials and removal of waste products from its
environment.
❖ The degradation of the environment has become a serious problem.
❖ The pollution of soil, water and air leads to loss of valuable natural
resources.
, 1.2 DEFINITIONS
1. Environment
❑ Environment is defined as, “the sum of total of all the living and
non - living things around us influencing one another.”
2. Environmental science
❑ Environmental science is the study of the environment, its biotic
(ie., biological) and abiotic (ie., non biological) components and their
interrelationship.
3.Environmental Engineering
❑ Environmental engineering is the application of engineering
principles to the protection and enhancement of the quality of the
environment and to the enhancement and protection of public health
and welfare.
Dr. A. RAVIKRISHNAN,
M.Sc., M.Phil., M.Ed., Ph.D., MISTE., MILCS.,
Asst.Prof of Chemistry.
, Environment and Biodiversity
1.1 Introduction
❑ The word environment is derived from the French word
“Environ” meaning “Surroundings”.
❑ Each and everything around us is called as environment.
❑ Every organisms is surrounded by materials and forces
which constitute its environment, from which it must derive
its needs.
❑ Environment creates favourable conditions for the
existence and development of living organisms.
,Example
Cow eats plants for its survival. The plant requires nourishment from
the soil. Nourishment is provided by nitrogenous mater excreted by
animal (or) by the dead bodies of other plants and animals.
❖ Thus for the survival of an animal (or) a plant, (or) a microbe, it
requires a supply of materials and removal of waste products from its
environment.
❖ The degradation of the environment has become a serious problem.
❖ The pollution of soil, water and air leads to loss of valuable natural
resources.
, 1.2 DEFINITIONS
1. Environment
❑ Environment is defined as, “the sum of total of all the living and
non - living things around us influencing one another.”
2. Environmental science
❑ Environmental science is the study of the environment, its biotic
(ie., biological) and abiotic (ie., non biological) components and their
interrelationship.
3.Environmental Engineering
❑ Environmental engineering is the application of engineering
principles to the protection and enhancement of the quality of the
environment and to the enhancement and protection of public health
and welfare.
