APES Unit 1

Which trophic level has the least available energy in kilojoules in this food web?

Human

Energy is transferred along food chains from one stage to the next. Which statement best explains how the energy is transferred?

If a primary producer stores 10,000kcal of energy, then a tertiary consumer will have 10kcal of energy available.

Based on the food web shown above, which of the following correctly describes the flow of energy through the trophic levels from producers to quaternary consumers?

Shrub, rabbit, snake, mountain lion

The majority of the nitrogen on Earth can be found in which of the following reservoirs?

The atmosphere

Which of the following best describes an example of resource partitioning in an ecosystem?

Two different bird species feed from the same oak tree; one eats acorns, and the other eats insects in the bark.