What is true of the energy that is passed from one trophic level to the next in a food chain? . a)about 10% of the energy passed from one level to the next is released as heat.. b)about 10% of the stored energy of one level becomes stored energy at the next higher level.. c)the energy at each level increases by about 10% with each move up in trophic level.. d)the total energy at all trophic levels is constant, but only about 10% is available for use by organisms for life functions.

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.