Environment

Global Environmental Issues like Green House Effect, Green House Gases and their mitigation.

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The Greenhouse Effect The greenhouse effect is a natural phenomenon that insulates the Earth . Incoming solar radiations are absorbed and reemitted back from the Earth’s surface as infrared energy, greenhouse gases (GHGs) in the atmosphere prevent some of this heat from escaping into space, instead reflecting the energy back to further warm the surface. Human … Read more Global Environmental Issues like Green House Effect, Green House Gases and their mitigation.

Indian Remote Sensing (IRS) satellites system.

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Remote sensing refers to the measurement or acquisition of information about an object or phenomena from a distance without physical contact by using devices or sensors mounted on some platform. Remote sensors collect data by detecting the energy that is reflected from Earth. These sensors can be on satellites or mounted on aircraft. Remote sensors can … Read more Indian Remote Sensing (IRS) satellites system.

Definition of Internet, search tools, web browsers, e-mail and search engines. IT applications: E-cards, E- shopping, E-commerce.

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INTERNET The Internet is a global network of billions of computers and other electronic devices. With the Internet, it’s possible to access almost any information, communicate with anyone else in the world, and do much more. It’s important to realize that the Internet is a global network of physical cables, which can include copper telephone wires, TV cables, … Read more Definition of Internet, search tools, web browsers, e-mail and search engines. IT applications: E-cards, E- shopping, E-commerce.

The Environment (Protection) Act (1986)

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The Environment Protection Act is an important legislation that provides for coordination of activities of the various regulatory agencies, creation of authorities with adequate powers for environmental protection, regulation of the discharge of environmental pollutants, handling of hazardous substances, etc. The Act provided an opportunity to extend legal protection to non-forest habitats (‘Ecologically Sensitive Areas’) … Read more The Environment (Protection) Act (1986)

Software and application of PC software packages: Software definition, Type of software and its Knowledge of Word processing, Spreadsheets and Power point presentation software packages

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Software is a set of programs, which is designed to perform a well-defined function. A program is a sequence of instructions written to solve a particular problem. There are two types of software − System Software Application Software System Software The system software is a collection of programs designed to operate, control, and extend the … Read more Software and application of PC software packages: Software definition, Type of software and its Knowledge of Word processing, Spreadsheets and Power point presentation software packages

Basic element of Communication systems, data transmission mode, transmission media, network topologies, network types, communication protocols, network security mechanism.

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Elements of a Communication System Elements of a communication system The above figure depicts the elementsof a communication system. There are three essential parts of any communication system, the transmitter, transmission channel, and receiver. Each parts plays a particular role in signal transmission, as follows: The transmitter processes the input signal to produce a suitable … Read more Basic element of Communication systems, data transmission mode, transmission media, network topologies, network types, communication protocols, network security mechanism.

Data, Data processing, business data processing, data storage, file management system and data base management systems.

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Data, Data Processing and Database management System Data processing and data management are critical components of business organizations. DATA PROCESSING Data processing refers to the process of performing specific operations on a set of data or a database. A database is an organized collection of facts and information, such as records on employees, inventory, customers, … Read more Data, Data processing, business data processing, data storage, file management system and data base management systems.

Ozone depletion

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Ozone (O3) is a molecule made up of three atoms of oxygen (O), and is mostly found in the strato- sphere, where it protects us from the Sun’s harmful ultraviolet (UV) radiation. Although it represents only a tiny fraction of the atmosphere, ozone is crucial for life on Earth. The stratospheric ozone layer forms a … Read more Ozone depletion

Basic concepts of ecosystem

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Eco-System-An ecosystem is defined as a structural and functional unit of biosphere consisting of community of living beings and the physical environment, both interacting and exchanging materials between them. It includes plants, trees, animals, fish, birds, micro-organisms, water, soil, and  people. When an ecosystem is healthy (i.e. sustainable) it means that all the elements live … Read more Basic concepts of ecosystem

Plants and mankind, characteristics of plants, structure and function of plant cells and organelles;

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  Objects having characteristics of cellular organization, growth, reproduction, ability to sense environment and give response are living organisms. There are some important features of living organisms: It should grow, which means its structure changes as time goes by in an advantageous manner. It should show adaptation to the environment. It should maintain some balanced … Read more Plants and mankind, characteristics of plants, structure and function of plant cells and organelles;