Environmental Management

• Ecosystem is formed by biotic and abiotic factors and their interactions with each other.
• Each factor plays a very important role in the ecosystem.
• Producers like plants are important in the ecosystem.
• Herbivores like deer, goats, sheep, cattle, horses, camels, etc feeding upon producers are also important in the ecosystem.
• Predators like lion and tiger which prevent the overpopulation of herbivores are also equally important in the ecosystem.
• Caterpillars found in nature, organisms present in filthy places, termites, insects present in dung, are also important in the ecosystem as they are responsible for cleaning the environment.
• Our existence is due to these factors present around us.
• Abiotic components of the ecosystem include Hydrogen, Oxygen, Nitrogen, Calcium, Iron, Sodium, Potassium.
• Biotic components of the ecosystem include proteins, carbohydrates, fats.
• Ecosystem includes air, water, vapour, minerals, soil, sunlight.
• Inorganic substances are physical factors in the ecosystem.
• Tertiary consumers are animals in the food chain.
• A bird building nest on a tree feeding upon the fishes in nearby pond is part of both i.e. tree as well as pond ecosystem.
• Paddy is cultivated on a large scale in various states of South India.
• Paddy fields are frequently attacked by grasshoppers.
• Frogs are also present in large number in the mud of paddy fields, to feed upon grasshoppers.
• Environmental Conservation is the responsibility of every human being.
• Thousands of people have been affected for long term due to these accidents.
• Chernobyl, Windscale, and Three Miles Island mishaps are the major mishaps of the world till present.
• Ultimate adverse effect of all these is on existence of all the living organisms and environmental conservation has become the need of hour.
• Environmental balance is maintained through continuous operation of various natural cycles like water cycle, carbon cycle, gaseous cycles like nitrogen cycle, oxygen cycle, etc.
• It is the basic responsibility of human being to preserve the nature without disturbing its balance.
• UV and IR radiations are natural radiations whereas X-rays and radiations from atomic energy plants are artificial radiations.
• Environment consists of many ecosystems.
• Radioactive pollution can occur due to two reasons as natural and artificial.
• Some of the effects of radiations are as follows- Cancerous ulceration occurs due to higher radiations of X-rays.
• The basic functional unit used to study ecology is called an ecosystem.
• Some ecosystems have been studied in earlier classes, for example, a small pond is an ecosystem whereas the Earth is the largest ecosystem.
• Human existence is totally impossible without the existence of nature.
• Environmental pollution is one of the main factors responsible for environmental imbalance.
• Environmental balance is also maintained due to various food chains of ecosystem.
• Ecology is the science that deals with the study of interactions between biotic and abiotic factors of the environment.
• Pollution is a broad concept that includes various types of pollutions like that of air, water, sound, soil, thermal, light, pollution.
• Snakes are also present in paddy fields to feed upon their favourite food- frogs.
• Environment is a broad concept including physical, chemical and biological factors affecting the living organisms in any possible way.
• Natural environment consists of air, atmosphere, water, land, living organisms, etc.
• Continuous interactions occur between biotic and abiotic factors in the natural environment.
• Artificial environment is also affecting the natural environment directly or indirectly.
• Environment consists of two basic factors- biotic factors and abiotic factors.
• Tissues in the body are destroyed due to pollution.