Mutation is an important mechanism for evolutionary change. which type of mutations contribute to evolution?
a. germinal mutations
b. somatic mutations
c. both somatic and germinal mutations

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

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.

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?