The answer is; 1, 2, 3, 5
El Nino involves very wet weather condions that cause extensive flooding. The floods of an El Nino can damage habitats, kill organisms and destroy most of the resources required to sustain an initial popualtion size. El Nino might also wipe out a large proportion of a population. This, therefore, wipes out a large proportion of alleles from the population. If the population was very small, there will be a dramatic shift in allele frequency since the small population left (with very low allelic variability) will have the responsibility of repopulating. This is called the bottleneck effect.
El Nino is an unusual surface warming that includes extremely wet climates. It leads to changes in the genetic makeup of organisms.
El Nino includes extremely wet climates that cause severe flooding.
El Nino floods can damage habitats, kill ecosystems and destroy much of the resources needed to maintain the original human population.
El Nino could also wipe out a large portion of the population. Therefore, this clears most of the allele in humans.
If the population was too small, there would be a significant change in alle frequencies as the remaining small population (with low allelic variability) would be obliged to replenish.
Thus, El Nino is an unusual surface warming that includes extremely wet climates and this leads to changes in the genetic makeup of organisms. This is called the bottleneck effect. Option 3. is the correct answer.
To learn more about El Nino, refer:
https://brainly.com/question/26861711
