The eastern gray squirrel exists in many different areas of the country, mostly in wooded areas. Some squirrels are black because of a genetic mutation. Based on the pictures, is this color mutation clearly beneficial or harmful to the squirrel? Do environmental factors partially determine whether the mutation is beneficial? Explain your answer.

Name the glands associated with human digestive system

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.

One of the reasons that stars are so large is because