Biology

The correct answer is: C.The bird population would decrease.

Here’s why:

1.If a disease destroys the barley plants in the field, this would reduce the food supply for barley-eating birds. With fewer resources available, the birds would have less to eat, which would likely lead to a decrease in their population.

2.A decrease in available food typically causes a decline in the population of organisms that depend on that food source. If the birds are unable to find enough barley, they might not survive, or their reproductive success could decrease, leading to a population decline.

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