The mark and recapture method of determining population size is always more effective than the sampling method?

The mark and  recapture method of determining population size is always more effective than the sampling method is incorrect.

Explanation:

The mark and recapture method works by trapping and marking the animals in groups. The method relies on ratios of marked to unmarked organisms. The numbers of the animals that are marked and the unmarked are recorded and used to estimate the population size. This method is not very effective but it is most when useful when the entire organism in a population cannot be counted practically.  The sampling method determines the population size of organisms by sampling them using quantitative techniques such as quadrants (for immobile organisms such as plants) and pitfall traps (for animals). The sampling method is considered to be more effective than the mark and recapture method.

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explanation:

the supermassive black hole is in the middle of the galaxy.