Which of the following have contributed to historical increases in the global human population? unavailability of clean water decreases in the birth rate advances in hygiene increases in the number of deaths

My question says on my assignment. read the following scenarios and decide which of the properties of life are being described. the first one is. katherine stopped on the way to school to grab some donuts. 2. because a dog cannot sweat, it has to pant in order to stay cool. 3. an elephant trun had no bone but 4,000 muscles. i have no idea what i am supposed to anwer. i can't find the answer in my notes or book that i can understand anyway

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Since color is not a very useful way to identify a mineral what other article property or properties can be used