Which best describe the structure of DNA?

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

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an