Answer:
I feel it's to easily differentiate the positive from the negative...... like in gram staining of bacteria, the colour tell us which bacteria is gram positive or gram negative...... I just feel that this is science and it is advisable to know what the opposite result of an experiment should look like.
the population size is at 300 and yeah
The answer would be B, because they have subcellular organelles.
we use the model to learn about how to create new things
