What was the second weather condition that made it a struggle for some finches to survive

Explanation:

After the drought, the medium ground finches that managed to survive had smaller beaks than those that had perished, probably because they were better suited to eating the small seeds that their competitors avoided. ... This genetic shift is likely responsible for some of the reduction in beak size, the researchers say.

not too sure thinking it will always be directed towards the centre of the earth. could be wrong not sure

powerful computers now, not then