Please help me

Please

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

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.