Fact 1: Bottleneck effect occurs when a population suddenly gets much smaller. Fact 2: Effects of bottlenecks are unpredictable . Given the two facts above, what is the effect of a population suddenly getting much smaller?

Select from the following. 1. major threat to health 2. Decreased precipitation 3. a lot of human deaths 4. movement of tectonic plates 5. it is unpredicatbale 6. If they can no longer get food 7. Plant growth is reduced 8. enormous damage to homes
The answer is:
5.