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state anyAnswer all questions 1. One hundred tosses were made to a sample of Chrysopogon species (love grass) in a grass lawn using a 1 m 2 quadrat. If the frequency of Chrysopogon species is 70, determine its density in the field. 2. Four hundred and twenty-eight insects were trapped, marked and released into the field. A few days later, 639 insects were trapped from the field, but 89 of these had been marked; (a) estimate the population of insects in the field (b) explain why the second trapping was done some days after the first trapping. |
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