exchange rates

A nuclear reactor is a device for obtaining and using the energy from a controlled nuclear chain reaction. Controlled means the rate or speed of the nuclear fissions can be changed by the operator. Most reactors are constructed in a similar manner. The six main parts of a nuclear re..

Breathing Mechanism - The physical movements associated with the gaseous exchange are called breathing. The various structures that are involved in the breathing mechanism are the respiratory passage, the lungs, the outer and inner intercostal muscles, the diaphragm and the muscles attach..

The closed circulatory system can be represented as follows. Diagram showing inter-relationship between artery, vein and capillary The closed blood vascular system is a very well developed system This is so because, a) The organisms have a thick body wall to prevent the evaporation of water, so ..

A nuclear reactor is a device for obtaining and using the energy from a controlled nuclear chain reaction. Controlled means the rate or speed of the nuclear fissions can be changed by the operator. Most reactors are constructed in a similar manner. The six main parts of a nuclear reactor ..

When a solid is heated it starts melting at a certain fixed temperature (melting point). At this stage even when the heating is continued, the temperature does not change until the whole of solid is converted into liquid. The state when solid and liquid phases of a substance coexist is called solid..

Any system where there is a constant exchange of matter and energy from the surrounding environment is called as open system. All living organisms represent open systems. Any state of a system where the rate of input of energy and matter is equal to the rate of..

Both living organisms and non-living matter are composed of some basic elements and are bound by the same physical laws. However, living organisms differ from non-living matter in some specific aspects. Living organisms exhibit a kind of organisation from molecular level to the organismic leve..

Similarly, India is bestowed with 7520 km of coastline with 20 lakh square km of exclusive economic zone for fishing around coastline. High priority is being offered to marine fisheries development with the support for production, marketing, canning the fishes as well as offering suitable training ..

Summary - In a physical change the shape, size, appearance or state of a substance may alter, but it is a temporary change, which is usually reversible. There is no new substance formed, no change in the mass of the substance and no energy changes are involved. In a chemical change, new substances ..

>A chemical equation is balanced so that the numbers of atoms of each type involved in a chemical reaction are the same on the reactant and product sides of the equation Equations must always be balanced. Equations are balanced by the hit and trial method. The rate of a chemical reaction ..