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Diseases Spread by Insects or Other Carriers:
We know malaria is transmitted by the female Anopheles mosquitoes. Dengue fever and filaria are also caused by mosquito's bite. These insects suck blood and also inject some of it back into the body. Mosquitoes get the germs by sucking the blood of someone suffering from the disease, and transmit them to others when they puncture their skin or '!bitem them. Houseflies are also caniers of germs of intestinal diseases. Simparly many fleas also spread diseases. Rats are reservoir of many diseases. Innumerable. outbreaks of plague were caused by them. Lice, ticks, cockroaches, etc. also carry germs of various diseases. Guinea worm disease is quite common in India. The adult worm is about a metre long and it migrates from the stomach to the leg and produces larvae which are released in water as shown in Fig.
Classification of Fires As explained also. We can say that the four main sources of fire risk in the science laboratory are: i) flammable substances, ii) compressed and
the structures that makes up a cell are called
Question 1. With the help of an example, explain the importance of patient preparation in CT scanning? 2. Why Radiation protection & safety aspects are necessary in a radiol
What is movement of the Heart
Types of soils Secure samples of soil from as many places as possible and place in glass jars. Try to get examples of a sandy soil, a loam soil, a clay soil, a soil rich in dec
Illustrate about the Soil Water Water, as you are well aware, is the most common substance on earth which is essential for life. Plants require water continually to satisfy t
which state of matter does light travel the fastest through
Water Pollution Pollution of fresh water is one of the most serious environmental problems of the world as a whole. In our country most of the rivers and lakes are polluted
Checking Breathing and Pulse : Before attempting to resuscitate a casualty, it is essential that you check his/her breathing rate and pulse. You can cause problems if you attempt
how many nerves in the human brain and how many in a dogs brain
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