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(a) In summer, why do we find white patches on our clothes, especially in areas like underarms?

(b) Describe the excretory products of birds and lizards.

Asked by Topperlearning User 4th June 2014, 1:23 PM
Answered by Expert
(a) On a hot summer day, we sweat a lot. Sweat contains water and salts. The water of sweat evaporates, leaving behind the salts which appear as white patches on our clothes.

(b) Birds and lizards excrete a semi-solid, white coloured compound, the uric acid.
Answered by Expert 4th June 2014, 3:23 PM
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