Body temperature, Environmental temperature, Body mass, Reproductive condition, Activity, Feeding, Body condition, Season. All of these would help increase it. Hope this helps. :)
Increasing predator population
I believe it's genes. Your parents mixed genes to create you.
Answer:
It is rich in nutrients necessary for basic plant nourishment.
Explanation:
This includes nitrogen, phosphorus and potassium. It consists of adequate minerals such as boron, chlorine, cobalt, copper, iron, manganese, magnesium, molybdenum, sulphur and zinc.