Q. In the given food web, an increase in the population of hawks will not result in
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 1853  183 Ecosystem Report Error

Solution:

In the given food web, hawk is the top carnivore feeding upon lizard, rabbit snake and mouse. So, if the population of hawks would increase, they would feed more on rabbit, snake, mouse and lizards which will result in decrease of their population. Due to less number of predators (lizards), population of grasshopper will increase.