What do you think caused the changes in the finch population and average beak size during the drought

Explanation:

I think the food shortage (in this case of seeds) caused the changes in the finch population and the average of the beak size during the drought since plants were not producing new seeds, so the smallest-beaked finches had no way to feed themselves, the small seeds ran out very quickly and there were only large seeds that the smallest-beaked finches could not eat, since they were too big for them, that is why they started to disappear, which at the same time increased the average beak depth because only large-beaked finches were left.

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them