Multiple ChoiceWhich trophic level has the least available energy (in kilojoules) in a typical food web?197views
Multiple ChoiceEnergy is moved through any ecosystem via a ________ _________. Which of the following best completes the statement?128views
Multiple ChoiceWhich members of an ecosystem are directly involved in the flow of energy from one trophic level to another?143views
Multiple ChoiceWhich of the following is NOT an example of energy transformations in an ecosystem?131views
Multiple ChoiceWhich of the following diagrams correctly represents an energy pyramid in a living system?129views
Multiple ChoiceWhich of the following best describes how chemical energy travels up the food pyramid?136views
Multiple ChoiceIn this energy pyramid, which trophic level contains the greatest amount of available energy?189views
Multiple ChoiceUsing the data in this table, calculate the: Net production efficiency of the grass.1233views2rank
Multiple ChoiceTo recycle nutrients, an ecosystem must have, at a minimum, which of the following components?220views
Multiple ChoiceIn an ecosystem, approximately how much energy is transferred from one trophic level to the next higher trophic level?155views