As an experiment, you infect bacteria with an unknown virus to see how the virus affects the bacteria. After a few days, you notice that the bacterial population is growing normally and that the cells appear healthy. Assuming that the infection occurred successfully, what can you conclude from your observations

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

If animal agriculture was eliminated, how much grain would become available for human consumption?

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.