Answer:
Again tysm!!!!!!! You may go on my profile and click on a question with only 1 answer or none and answer it but you dont have to answer like solve if ya know what i mean!
Explanation:
The answer is D (St. Louis). St. Louis and Jefferson City are both in Missouri.
The research error described above is an example of selection bias.
Selection bias takes place when, from a population of interest, a group of individuals is selected in order to construct a sample but without a proper randomization. The result is a sample which is not representative of the underlying population.
According to the example, the target population of the research comprises all students but the sample only includes boys. Hence, selection has not been random because it followed a gender criteria, and the results obtained using it cannot be applicable to the whole population because they are affected by a selection bias.
Guyana's education system comprises the following educational levels: nursery, primary, secondary, technical and vocational education, teacher training and university
I would say the answer is A. Dimitri made the modern periodic table, not chemical symbols, and generally compounds do not have the same properties, for example water which is made of 2 gases.
