Selma is about 25 pounds overweight, has tried several diets, and repeatedly failed to maintain weight loss. she defends her weight with the explanation that most of her relatives are overweight, and none has ever been successful with attempts to lose weight. selma can best be described as:

What is true of sea slugs in these orders

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

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.