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Its placed randomly in a number of sites in the habitat being studied.
A quadrat is a square or rectangular sampling frame used in ecological research to study and measure the distribution of organisms in a particular area. It helps researchers collect data on population density, species diversity, and habitat characteristics in a standardized and systematic way. By placing quadrats at random or predetermined locations within a study area, scientists can gather quantitative data to analyze and compare different ecological communities.
They are the same size so you will know that it is always right. The disadvantage is you will have to depend on human accuracy in the project.
yoggi berra
Finite precision arithmetic, solve numeric errors by using the floating point.