The correct answer for the question above is B,
Industrial agriculture increased our ability to obtain more food from the same area. Industrial agriculture is a form of modern agriculture that refers to industrialized production of crops, poultry, livestock and fish. The methods used are technoscientific, economic and political. For example today majority of American farmland is dominated by industrial agriculture.
The gar will increase since there are less alligators, the crabs will decrease since there are now more gar to eat them, the duck will increase since now there is less crab to eat them
Some <u>birds</u> are both primary consumers and secondary consumers.
<u>Explanation:</u>
Primary consumers are the class of animals that are feeding upon the producers as their primary food. Secondary consumers are the class of animals that are feeding upon a primary consumer to feed themselves.
Some of the birds like sparrow, humming birds etc feed on fruits and seeds of plants to maintain their lives. They are thus the primary consumers. Others like eagle, crow eats on flesh of primary consumers. So they are secondary consumers. Thus birds can be both primary consumers and secondary consumers.
