Luca wants to identify and quantify the chemicals causing air pollution in a city, but he is using a manual air sampler to collect air samples.
why should he update his current sampler to an electronic one?
to maintain the current way air sampling data are stored
to diagram exactly what portions of the city are affected by air pollution
to make predictions about air pollution that are precise but not accurate
to account for broad-scale factors that affect the number of chemicals identified

What are two ways in which waves erode the land?

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

What is the cause hearing loss in human being