For which of the following cases, population density can be easily determined by utilizing non - biological parameter?
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Sometimes population density is estimated using non-biological parameters such as pug marks (footprints), nests, burrows, or indirect signs rather than counting individuals directly.
Fish density → direct biological count.
Bacterial density in culture plate → direct count of colonies.
Siberian cranes → direct counting of birds.
Tiger census → often estimated using pug marks and other indirect evidence (non-biological parameters).
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