Astructure that is made up of more than one type of tissue and carries out a specific function is a(n)

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

The energy available as a result of the motion of a body is called energy. -potential -gravitational -kinetic -chemical

Are the earth's ocean floor and continents the same age geologically? why or why not?