Which explanation best fits with the data shown? a. the efficiency with which chemical energy is transferred from one trophic level to the next does not follow a predictable pattern. b. the efficiency with which chemical energy is transferred from one trophic level to the next increases from the bottom of the pyramid to the top. c. the efficiency with which chemical energy is transferred from one trophic level to the next decreases from the bottom of the pyramid to the top. d. the efficiency with which chemical energy is transferred from one trophic level to the next is about the same for all trophic levels.

If you are in a chronic state of anxiety but also suffer from moment of sudden, intense fear you are problably suffering. from

Apopulation has 1000 individuals. over a period of 1 year, 500 newindividuals are born. which equation shows how to calculate the birthrate ofthis population? a. 500 - 1000 = 0.5b. 1000 x 0.5 = 500c. 1000 - 500 = 2d. 1000 + 500 = 1500

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.