A Desert Environment Has a Very Low NPP

question 181

Multiple Choice

A desert environment has a very low NPP.What does this suggest about the number of trophic levels in its food webs?

• A) The only predators will be small, such as scorpions.
• B) The webs will have plants and primary consumers only.
• C) All food chains in the web will have at least three secondary consumers.
• D) Most food chains will have few trophic levels, usually only three.
• E) Most food chains will have at least four or five trophic levels.