Use the following diagram of a hypothetical food web to answer the following questions. The arrows represent the transfer of food energy between the various trophic levels.

Which letter represents an organism that could be a primary consumer?

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#Question id: 4557

#Unit 3. Fundamental Processes

In eukaryotic transcription RNA polymerase II is transcribed

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#Question id: 1541

#Unit 4. Cell Communication and Cell Signaling

Nonphagocytic cell of immune system,

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#Question id: 18578

#Unit 7. System Physiology – Animal

During which stage of the general adaptation syndrome (GAS) is the risk for physiological harm, such as reduced immunity and increased susceptibility to physical or mental illness, greatest?

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#Question id: 15672

#Unit 2. Cellular Organization

Late log phase of the bacterial growth curve

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#Question id: 13141

#Unit 10. Ecological Principles

Five similar populations of a herbaceous annual plant are monitored for three years; then, the numbers of individuals in populations I-IV are increased by an experimenter. Subsequent changes in the sizes of all the populations are shown in the graph below.

If size distributions of individuals do not vary among these populations, which of the following relationships best illustrates the occurrence of population regulation?