The natural resources are of multiple types. These are classified on the basis of chemical composition, abundance and availability and presence in the different parts of world. There are inorganic…
The fossil fuels include the coal, petroleum and natural gases. They play a vital role as a source of energy. The oil resources are limited and have a great demand.…
There are the other sources of energy. It includes the, solar energy and different types of power like nuclear, wind and hydroelectric. The energy from garbage and geothermal is also…
The energy problems are increasing day by day. They are serious and can become critical in the coming time. We should follow certain energy saving programmes. The life style should…
The atmosphere is defined as a gaseous envelope which covers the earth. It consists of many layers. These include the troposphere, stratosphere, mesosphere and thermosphere. The troposphere extends from the…
The earth is mainly formed by the water. It makes more than the 80 percent of the earth surface. The earth is also known as the water planet. The water…
The kingdom animal consists of multi cellular eukaryotic organisms. It consists of many phyla which are mentioned below. Phylum Porifera are pore bearing animals. Phylum Cnidaria has stinging cells and…
Digestive tract is defined as the path through which food travels and goes through the various processes like absorption, digestion and elimination. Animals included under coelenterates and flat worms have…
Respiration is mainly of two types that are aerobic and anaerobic. Aerobic respiration includes cutaneous, branchial and body surface respiration. Aerobic animals require oxygen which is utilized from air or…
There are certain organisms which lose the metabolic wastes through their body by diffusion. It includes sponges, coelenterates and echinoderms. There are flame cells which help in excretion and occur…
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