What is a food web?
a trophic level on the food chain
a complex series of feeding relationships with many organisms interacting and depending on each other
a sequence of organisms through which energy is transferred, starting with the primary producer
a direct feeding relationship

 a complex series of feeding relationships with many organisms interacting and depending on each other

A food chain is a linear sequence of transfer of food and energy when one organism is consumed by other organism in an ecosystem. A food chain starts with primary producers that includes plants, which are consumed by herbivores like goat, these are called as primary consumers. These primary consumers are consumed by secondary consumers like fox, the secondary consumers are consumed by tertiary consumers like lion or tiger. This way organisms depends upon other organism for their food requirements. A food web is an interconnection of organisms belonging to different food chains. Like, a crocodile is dependent upon both aquatic animals like fishes and terrestrial animals like zebra to obtain it's food.

On the basis, of the above information a complex series of feeding relationships with many organisms interacting and depending on each other correctly describes a food web.  

a community that experiences major changes undergoes progress

the answer is c.

by: nicholas dooley