Owls have 'nightshine' vision. A layer of cells in an owl's eyes cause them to be glossy or mirror-like and this allows them to capture all of the available light. Owls are able to see in detail where humans see only darkness.
Toxic test
Toxic test New research has indicated that techniques which
measure amounts of pollutants in soil by measuring how much of it
is entering the food chain, are more effective than those which
measure pollution by measuring the total amounts present in the
soil. 4 DECEMBER 1999, P. 23
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