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Which of the following effects on humans...

Which of the following effects on humans will be caused by excessive exposure to UV-rays ?

A

Skin cancer

B

Damage to immune system

C

Damage to heart and lungs

D

peptic ulcers

Text Solution

Verified by Experts

The correct Answer is:
A, B
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BHARATI BHAWAN (ENGLISH)-OUR ENVIRONMENT -M.C.Q
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  2. Chlorofluorocarbon (CFC) is mainly responsible for:

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  4. Choose the correct statement (s)

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  5. Which trophic level is occupied by carnivores in a food chain ?

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  6. If a frog eats a grasshopper, then the energy will be transferred from

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  7. If 10 kilocalories of energy is available to snakes (fourth trophic le...

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  8. A network of interconnected food chains is called

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  9. Which of the following groups of organisms do not synthesize carbohydr...

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  10. Which of the following represents an artificial ecosystem ?

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  11. Why shold we not use plastic cups and plates ?

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  12. Which of the following groups of organisms convert organic materials t...

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  13. What will be the result if in the following food chain goat popualtion...

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  14. In which form is the 10% energy available for transfer from one troph...

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  15. Why is the number of trophic levels limited in a food chain ?

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  16. What percentage of solar radiation is absorbed by all the green plants...

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  17. In the following diagram which trophic level will have the maximum ene...

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