本题目来源于试卷: SL Topic C4.1 Populations and communities，类别为 IB生物学
[问答题]
d. The population was estiw+dsns gp1bi /tsg090n,m-out 7hp t 5mated by using drones to photo cv d**ij)n0 j.yzu+gqgraph the population. Suggest why cgj) dny j+uiq 0z*v*.the population estimate is given to an uncertainty of ± 10.
参考答案: Photography is an accurate method of measurement/photography can be carried out over the whole island/ photography would not give a great difference between the estimated and the true population. Not all the goats may have been photographed.
The population may change each day/goats may be born or die.
本题详细解析:
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