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Green lacewings are used to control aphids, which are pests of many crops. A population of 1000 green lacewings is released into a farmer’s field. The graph shows the change in the population over time.

The graph plots a population of green lacewings over ten years. The population grows slowly over the first three years. Then from year 3 to 7, the population increases greatly. From year 8 to year 10, the population stabilizes.

What is the most likely explanation for the
approximately constant population of the lacewings
after the eighth year?
O A. The lacewings had eaten all of the aphids
in the field.
O
B. The lacewing population had reached the
carrying capacity of the field.
C. New predators of lacewings had arrived in
the field.
OD. The birthrate of lacewings had increased,
while the death rate remained constant.

1 Answer

4 votes

Answer:

B

Step-by-step explanation:

Once you reach the roof, you can't break through the cieling. (Or at least, that's how I explained it)

User Wgm
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