Diagrams of the flow of energy through a tree (such as the one on the right) show that a lot of energy is lost as heat. which of the following statements offers the best explanation for this loss?

a.) the first law of thermodynamics, which states that inputs of energy must equal outputs
b.) the second law of thermodynamics, which states that all transfers of energy are inefficient
c.) the fact that some of the solar energy intercepted by the plant is reflected and not absorbed
d.) the fact that some of the energy absorbed is converted into sugar via photosynthesis

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.