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The tracking of people by trained dogs is based on the recognition of which of the following compounds in the sweat from feet? |
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(a) |
Carboxylic acids |
(b) |
Uric acid |
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(c) |
Sugar |
(d) |
Salt |
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|
The tracking of people by trained dogs is based on the recognition of which of the following compounds in the sweat from feet? |
|
|||
|
(a) |
Carboxylic acids |
(b) |
Uric acid |
|
|
(c) |
Sugar |
(d) |
Salt |
|