Answer:
Eleven islands make up 95 percent of the Philippine landmass, and two of these — Luzon and Mindanao — measure 105,000 square kilometers (40,541 sq mi) and 95,000 square kilometers (36,680 sq mi), respectively.

It is the sun. You start with photosynthesis.
The rodent will become extinct or die due to the drastic temperature increase in a short period of time.