Biology
Which of the following acts as an insulator against heat, cold and as a shock-absorber in the body ?

Epidermis
None of these
Dermis
Subcutaneous fat layer

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Biology
Which of the following is not true of colour blindness?

Red-green colour blindness is the most common type of colour blindness
A colour blind person cannot see any colours
For some people, it might be difficult to recognize colours of traffic lights and signs
Colour blind people learn to rely on shapes, patterns, and positions of signs and signals

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