The substances secreted by the glands in the external auditory canal is

Most scientific questions are based on opinions. hypotheses. observations. experimental data.

Which statement best describes a typical difference that could be found between the “analysis” and “conclusion” sections of a lab report?

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution