A sample is termed REPRESENTATIVE SAMPLE if it has similar characteristics to the population being studied.
The representativeness of a sample is the extent to which its characteristics accurately reflects the characteristics of the population being studied.
Your answer is D
Gravel sized particals
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28 find that the cell spends in prophase (number of cells in prophase divided by the total # of cells (36) multiplied by 100)
Tar and other ingredients found in smoke act as carcinogens which can cause an uncontrolled growth of cells