Match each description to the level of organization
organism a group of organs that work together to perform a common function
organ a group of cells that work together to perform a common function
cell the basic unit of structure and function of living things
organ tissue a living thing that is made of organ systems
tissue a group of tissues that work together to perform a common function

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.