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Use of CFCs is banned in some countries
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It is advised to use electrostatic precipitators in the chimneys.
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It is mandatory to take a pollution certificate for the vehicles from the Traffic Police.
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Use of pressure horn is prohibited in certain places.
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The gas that leads to the reduction in the oxygen.
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What are 3 types of industrial pollutants?
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Use of which fuel in vehicle reduces pollution.
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Give Technical Terms:
The pollutant which reduces the oxygen carrying capacity of blood.
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Give Technical Terms:
The chemical element which caused the minimata disease in Japan.
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Fill in the Blanks:
Drinking polluted water causes diseases like ______ and ______.
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Fill in the Blanks:
Noise pollution causes Hearing impairment and ______.
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True or False:
The only health effect of ground-level ozone pollution is coughing.
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If waste materials contaminate the source of drinking water which of the following diseases will spread?
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Deforestation is one of the sources of pollution because:
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Oil spills are a source of pollution for:
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Maximum permissible smoke density in diesel vehicles is:
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Give Reasons
Most often only one embryo is formed at a time although there are two ovaries in women. Explain.
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Differentiate between the graafian follicle and corpus luteum.
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The below diagram represents the sectional view of the female reproductive organs of a mammal.

(i) Label the parts numbered 1 to 7.
(ii) What are the main functions of the parts labeled 2, 5, 6?
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Given below is a diagram of the female reproductive system of a human being

(i) Name the parts numbered 1 to 6.
(ii) Normally after how many days does an ovary release an egg?
(iii) Where are the sperms released during coitus?
(iv) What do the sperms do after being released?
(v) What is the function of the organ numbered 5?
(vi) How many days does it normally take from the fertilization of the egg up to the birth of the baby?
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