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20 April, 11:27

Which water depth had the biggest difference in survival rates for embryos with UV-B protection versus embryos without UV-B protection? (A) 0 cm (B) 100 cm (C) 50 cm (D) 10 cm

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  1. 20 April, 12:44
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    Answer: 10 cm

    Explanation:

    The water at 10 cm has the biggest survival rate for the embryos with ultraviolet B protection as compared to that of embryo which are not protected by UV-B.

    Ultraviolet rays can be very harmful as it can reach the fetus but due to some particles present in water the intensity of UV-B becomes attenuated below 10 cm of water.

    So, the correct answer is 10 cm.
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