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Explain physical barrier for External Defence Mechanism - Skin
It provides nice protective covering to the body. The outer layer- horny layer - contains dead keratinized cells. These cells have hard insoluble fibrous proteins called keratin, instead of soft protoplasm. This layer is water proof and germ proof. It can prevent entry of virus and bacteria.
write an essay about electrical energy conservation
Controlling Air Pollution: Now let us see, how air pollution can be controlled. i) Photochemical smog-eliminating this would require large scale changes in life style
A lamp chimney force pump Replace the piston in the lift pump explained above with a one-hole stopper. Fit the piston rod by the hole. Fit the bottom of the chimney with a two-
What is the earths core made of? Ans) The outer earth core is liquid and the inner is solid. Both parts are of alloy of two metals - iron and nickel, permitting the rise of the
alternative naturalenergyresourcebasedo on undergroundhot water source
Illustrate the physical and chemical properties of soil The cation exchange property is very significant because it affects the physical and chemical properties of soil. The mo
this is a sticky substance that traps dust from the inhaled air
which nutrient contains carbon, hydrogen, oxygen, nitrogen and sometimes sulphur and phosphorus?
Question 1 It is the job of operations managers to convince the stakeholders that the investment in plant and equipment is going to enhance the value of the investments already he
what are 5 different types of asexual reproduction?
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