Question

what do you think caused the changes in finch population and average beak size during the period of abundant rain?
be sure to write in complete sentences and utilize the lesson vocabulary.

Explanation:

During abundant rain, more small, soft seeds are available. Finches with smaller beaks are better at eating these seeds. Natural selection favors smaller - beaked finches as they have a higher survival and reproduction rate. This leads to an increase in the finch population (more individuals surviving and reproducing) and a decrease in the average beak size (as the trait of smaller beaks is passed on more frequently).

Answer:

During abundant rain, the availability of smaller, softer seeds leads to natural selection favoring finches with smaller beaks. This results in an increase in the finch population (due to higher survival and reproduction of smaller - beaked finches) and a decrease in the average beak size (as the smaller - beak trait is more prevalent).