Observations are things that can be perceived with senses (i. e., sight, sound, smell, taste, and touch). Inferences are decisions based on what was observed. Use specific examples from Joseph Priestley’s experiment to explain the relationship between what he observed and what he inferred.

d. groundwater flows through the subsoil and deposits minerals.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.