The ground finches adapted to have larger beaks to eat the bigger seeds in the drier seasons. This means over the years only the bigger beaked finches could survive to reproduce.
Answer:
46 chromosomes
or 23 pair of chromosomes but as u asked single it will be 46 chromosomes
None.
There's no such thing as "short term climate change".
By definition, climate change is a long term.
Short term changes are "weather", which has a great many causes.
Hope this helps :)
UGUCACG is the mRNA code.