Bottleneck effect occurs when a population suddenly gets much smaller.
Fishing pressure is relatively low due to a smaller human population.
Humans can make the bottleneck effect occur in fish.
What can make the bottleneck effect occur in fish?
[A] increased habitat
[B] acid rain
[C] humans
[D] Winter
[E] increased food
[F] storms
[G] increased resources
[H] Toxicity